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Finding the Fourth Proportional to 435,479.76, 653,156.28 and 135,890.64

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Solution

The fourth proportional to 435,479.76, 653,156.28 and 135,890.64 is: 203,816.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,479.76 : 653,156.28 = 135,890.64 : x
  2. Step 2: Convert to fraction form
    435,479.76/653,156.28 = 135,890.64/x
  3. Step 3: Cross multiply
    435,479.76x = 653,156.28 × 135,890.64
  4. Step 4: Simplify right side
    435,479.76x = 88,757,824,909.22
  5. Step 5: Solve for x
    x = 88,757,824,909.22/435,479.76
  6. Step 6: Final answer
    x = 203,816.19

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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.