Home / 308,155.28-425,385.25-187,335.16

Finding the Fourth Proportional to 308,155.28, 425,385.25 and 187,335.16

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Solution

The fourth proportional to 308,155.28, 425,385.25 and 187,335.16 is: 258,602.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,155.28 : 425,385.25 = 187,335.16 : x
  2. Step 2: Convert to fraction form
    308,155.28/425,385.25 = 187,335.16/x
  3. Step 3: Cross multiply
    308,155.28x = 425,385.25 × 187,335.16
  4. Step 4: Simplify right side
    308,155.28x = 79,689,613,870.39
  5. Step 5: Solve for x
    x = 79,689,613,870.39/308,155.28
  6. Step 6: Final answer
    x = 258,602.14

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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.