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Finding the Fourth Proportional to 278,773.01, 384,711.42 and 151,448.70

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Solution

The fourth proportional to 278,773.01, 384,711.42 and 151,448.70 is: 209,001.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,773.01 : 384,711.42 = 151,448.70 : x
  2. Step 2: Convert to fraction form
    278,773.01/384,711.42 = 151,448.70/x
  3. Step 3: Cross multiply
    278,773.01x = 384,711.42 × 151,448.70
  4. Step 4: Simplify right side
    278,773.01x = 58,264,044,434.15
  5. Step 5: Solve for x
    x = 58,264,044,434.15/278,773.01
  6. Step 6: Final answer
    x = 209,001.74

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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.