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Finding the Fourth Proportional to 439,335.20, 659,780.40 and 339,737.60

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Solution

The fourth proportional to 439,335.20, 659,780.40 and 339,737.60 is: 510,207.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,335.20 : 659,780.40 = 339,737.60 : x
  2. Step 2: Convert to fraction form
    439,335.20/659,780.40 = 339,737.60/x
  3. Step 3: Cross multiply
    439,335.20x = 659,780.40 × 339,737.60
  4. Step 4: Simplify right side
    439,335.20x = 224,152,209,623.04
  5. Step 5: Solve for x
    x = 224,152,209,623.04/439,335.20
  6. Step 6: Final answer
    x = 510,207.72

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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.