Home / 282,772.35-390,227.13-155,456.15

Finding the Fourth Proportional to 282,772.35, 390,227.13 and 155,456.15

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Solution

The fourth proportional to 282,772.35, 390,227.13 and 155,456.15 is: 214,530.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,772.35 : 390,227.13 = 155,456.15 : x
  2. Step 2: Convert to fraction form
    282,772.35/390,227.13 = 155,456.15/x
  3. Step 3: Cross multiply
    282,772.35x = 390,227.13 × 155,456.15
  4. Step 4: Simplify right side
    282,772.35x = 60,663,205,304.21
  5. Step 5: Solve for x
    x = 60,663,205,304.21/282,772.35
  6. Step 6: Final answer
    x = 214,530.19

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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.