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Finding the Fourth Proportional to 498,445.10, 747,740.55 and 161,428.40

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Solution

The fourth proportional to 498,445.10, 747,740.55 and 161,428.40 is: 242,166.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,445.10 : 747,740.55 = 161,428.40 : x
  2. Step 2: Convert to fraction form
    498,445.10/747,740.55 = 161,428.40/x
  3. Step 3: Cross multiply
    498,445.10x = 747,740.55 × 161,428.40
  4. Step 4: Simplify right side
    498,445.10x = 120,706,560,601.62
  5. Step 5: Solve for x
    x = 120,706,560,601.62/498,445.10
  6. Step 6: Final answer
    x = 242,166.21

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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.