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Finding the Fourth Proportional to 488,312.60, 732,468.90 and 311,165.60

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Solution

The fourth proportional to 488,312.60, 732,468.90 and 311,165.60 is: 466,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,312.60 : 732,468.90 = 311,165.60 : x
  2. Step 2: Convert to fraction form
    488,312.60/732,468.90 = 311,165.60/x
  3. Step 3: Cross multiply
    488,312.60x = 732,468.90 × 311,165.60
  4. Step 4: Simplify right side
    488,312.60x = 227,919,124,749.84
  5. Step 5: Solve for x
    x = 227,919,124,749.84/488,312.60
  6. Step 6: Final answer
    x = 466,748.40

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Similar ratio
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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.