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Finding the Fourth Proportional to 488,130.30, 732,195.45 and 311,420.70

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Solution

The fourth proportional to 488,130.30, 732,195.45 and 311,420.70 is: 467,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,130.30 : 732,195.45 = 311,420.70 : x
  2. Step 2: Convert to fraction form
    488,130.30/732,195.45 = 311,420.70/x
  3. Step 3: Cross multiply
    488,130.30x = 732,195.45 × 311,420.70
  4. Step 4: Simplify right side
    488,130.30x = 228,020,819,575.82
  5. Step 5: Solve for x
    x = 228,020,819,575.82/488,130.30
  6. Step 6: Final answer
    x = 467,131.05

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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.