Home / 287,021,658,768.24-396,090,048,018.08-155,034,007,617.36

Finding the Fourth Proportional to 287,021,658,768.24, 396,090,048,018.08 and 155,034,007,617.36

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Solution

The fourth proportional to 287,021,658,768.24, 396,090,048,018.08 and 155,034,007,617.36 is: 213,947,016,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,021,658,768.24 : 396,090,048,018.08 = 155,034,007,617.36 : x
  2. Step 2: Convert to fraction form
    287,021,658,768.24/396,090,048,018.08 = 155,034,007,617.36/x
  3. Step 3: Cross multiply
    287,021,658,768.24x = 396,090,048,018.08 × 155,034,007,617.36
  4. Step 4: Simplify right side
    287,021,658,768.24x = 61,407,427,521,595,496,726,528
  5. Step 5: Solve for x
    x = 61,407,427,521,595,496,726,528/287,021,658,768.24
  6. Step 6: Final answer
    x = 213,947,016,351.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.