Home / 282,371.13-389,678.45-155,047.23

Finding the Fourth Proportional to 282,371.13, 389,678.45 and 155,047.23

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Solution

The fourth proportional to 282,371.13, 389,678.45 and 155,047.23 is: 213,968.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,371.13 : 389,678.45 = 155,047.23 : x
  2. Step 2: Convert to fraction form
    282,371.13/389,678.45 = 155,047.23/x
  3. Step 3: Cross multiply
    282,371.13x = 389,678.45 × 155,047.23
  4. Step 4: Simplify right side
    282,371.13x = 60,418,563,487.96
  5. Step 5: Solve for x
    x = 60,418,563,487.96/282,371.13
  6. Step 6: Final answer
    x = 213,968.63

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1.5x scale

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.