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Finding the Fourth Proportional to 476,961.60, 715,903.20 and 290,337.60

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Solution

The fourth proportional to 476,961.60, 715,903.20 and 290,337.60 is: 435,786.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,961.60 : 715,903.20 = 290,337.60 : x
  2. Step 2: Convert to fraction form
    476,961.60/715,903.20 = 290,337.60/x
  3. Step 3: Cross multiply
    476,961.60x = 715,903.20 × 290,337.60
  4. Step 4: Simplify right side
    476,961.60x = 207,853,616,920.32
  5. Step 5: Solve for x
    x = 207,853,616,920.32/476,961.60
  6. Step 6: Final answer
    x = 435,786.90

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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.