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Finding the Fourth Proportional to 488,306.40, 731,293.20 and 299,349.60

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Solution

The fourth proportional to 488,306.40, 731,293.20 and 299,349.60 is: 448,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,306.40 : 731,293.20 = 299,349.60 : x
  2. Step 2: Convert to fraction form
    488,306.40/731,293.20 = 299,349.60/x
  3. Step 3: Cross multiply
    488,306.40x = 731,293.20 × 299,349.60
  4. Step 4: Simplify right side
    488,306.40x = 218,912,326,902.72
  5. Step 5: Solve for x
    x = 218,912,326,902.72/488,306.40
  6. Step 6: Final answer
    x = 448,309.35

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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.