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Finding the Fourth Proportional to 488,570.90, 732,856.35 and 133,620.80

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Solution

The fourth proportional to 488,570.90, 732,856.35 and 133,620.80 is: 200,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,570.90 : 732,856.35 = 133,620.80 : x
  2. Step 2: Convert to fraction form
    488,570.90/732,856.35 = 133,620.80/x
  3. Step 3: Cross multiply
    488,570.90x = 732,856.35 × 133,620.80
  4. Step 4: Simplify right side
    488,570.90x = 97,924,851,772.08
  5. Step 5: Solve for x
    x = 97,924,851,772.08/488,570.90
  6. Step 6: Final answer
    x = 200,431.20

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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.