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Finding the Fourth Proportional to 488,115.30, 732,829.05 and 311,405.70

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Solution

The fourth proportional to 488,115.30, 732,829.05 and 311,405.70 is: 467,527.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,115.30 : 732,829.05 = 311,405.70 : x
  2. Step 2: Convert to fraction form
    488,115.30/732,829.05 = 311,405.70/x
  3. Step 3: Cross multiply
    488,115.30x = 732,829.05 × 311,405.70
  4. Step 4: Simplify right side
    488,115.30x = 228,207,143,295.59
  5. Step 5: Solve for x
    x = 228,207,143,295.59/488,115.30
  6. Step 6: Final answer
    x = 467,527.13

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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.