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Finding the Fourth Proportional to 498,318.70, 747,587.40 and 245,720.20

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Solution

The fourth proportional to 498,318.70, 747,587.40 and 245,720.20 is: 368,634.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,318.70 : 747,587.40 = 245,720.20 : x
  2. Step 2: Convert to fraction form
    498,318.70/747,587.40 = 245,720.20/x
  3. Step 3: Cross multiply
    498,318.70x = 747,587.40 × 245,720.20
  4. Step 4: Simplify right side
    498,318.70x = 183,697,325,445.48
  5. Step 5: Solve for x
    x = 183,697,325,445.48/498,318.70
  6. Step 6: Final answer
    x = 368,634.22

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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.