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Finding the Fourth Proportional to 498,314.20, 747,471.30 and 143,307.40

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Solution

The fourth proportional to 498,314.20, 747,471.30 and 143,307.40 is: 214,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,314.20 : 747,471.30 = 143,307.40 : x
  2. Step 2: Convert to fraction form
    498,314.20/747,471.30 = 143,307.40/x
  3. Step 3: Cross multiply
    498,314.20x = 747,471.30 × 143,307.40
  4. Step 4: Simplify right side
    498,314.20x = 107,118,168,577.62
  5. Step 5: Solve for x
    x = 107,118,168,577.62/498,314.20
  6. Step 6: Final answer
    x = 214,961.10

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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.