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Finding the Fourth Proportional to 508,545.12, 701,801.16 and 279,123.86

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Solution

The fourth proportional to 508,545.12, 701,801.16 and 279,123.86 is: 385,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,545.12 : 701,801.16 = 279,123.86 : x
  2. Step 2: Convert to fraction form
    508,545.12/701,801.16 = 279,123.86/x
  3. Step 3: Cross multiply
    508,545.12x = 701,801.16 × 279,123.86
  4. Step 4: Simplify right side
    508,545.12x = 195,889,448,731.68
  5. Step 5: Solve for x
    x = 195,889,448,731.68/508,545.12
  6. Step 6: Final answer
    x = 385,195.81

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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.