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Finding the Fourth Proportional to 609,318.64, 913,381.39 and 254,434.15

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Solution

The fourth proportional to 609,318.64, 913,381.39 and 254,434.15 is: 381,402.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,318.64 : 913,381.39 = 254,434.15 : x
  2. Step 2: Convert to fraction form
    609,318.64/913,381.39 = 254,434.15/x
  3. Step 3: Cross multiply
    609,318.64x = 913,381.39 × 254,434.15
  4. Step 4: Simplify right side
    609,318.64x = 232,395,417,590.47
  5. Step 5: Solve for x
    x = 232,395,417,590.47/609,318.64
  6. Step 6: Final answer
    x = 381,402.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.