Home / 284,147.12-392,123.86-155,086.79

Finding the Fourth Proportional to 284,147.12, 392,123.86 and 155,086.79

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Solution

The fourth proportional to 284,147.12, 392,123.86 and 155,086.79 is: 214,020.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,147.12 : 392,123.86 = 155,086.79 : x
  2. Step 2: Convert to fraction form
    284,147.12/392,123.86 = 155,086.79/x
  3. Step 3: Cross multiply
    284,147.12x = 392,123.86 × 155,086.79
  4. Step 4: Simplify right side
    284,147.12x = 60,813,228,381.47
  5. Step 5: Solve for x
    x = 60,813,228,381.47/284,147.12
  6. Step 6: Final answer
    x = 214,020.22

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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.