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Finding the Fourth Proportional to 308,729.40, 462,402.90 and 253,433.40

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Solution

The fourth proportional to 308,729.40, 462,402.90 and 253,433.40 is: 379,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,729.40 : 462,402.90 = 253,433.40 : x
  2. Step 2: Convert to fraction form
    308,729.40/462,402.90 = 253,433.40/x
  3. Step 3: Cross multiply
    308,729.40x = 462,402.90 × 253,433.40
  4. Step 4: Simplify right side
    308,729.40x = 117,188,339,116.86
  5. Step 5: Solve for x
    x = 117,188,339,116.86/308,729.40
  6. Step 6: Final answer
    x = 379,582.70

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1.5x scale

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.