Home / 282,376.13-389,681.79-155,054.45

Finding the Fourth Proportional to 282,376.13, 389,681.79 and 155,054.45

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Solution

The fourth proportional to 282,376.13, 389,681.79 and 155,054.45 is: 213,976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,376.13 : 389,681.79 = 155,054.45 : x
  2. Step 2: Convert to fraction form
    282,376.13/389,681.79 = 155,054.45/x
  3. Step 3: Cross multiply
    282,376.13x = 389,681.79 × 155,054.45
  4. Step 4: Simplify right side
    282,376.13x = 60,421,896,016.22
  5. Step 5: Solve for x
    x = 60,421,896,016.22/282,376.13
  6. Step 6: Final answer
    x = 213,976.65

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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.