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Finding the Fourth Proportional to 498,214.70, 747,431.40 and 245,616.20

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Solution

The fourth proportional to 498,214.70, 747,431.40 and 245,616.20 is: 368,478.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,214.70 : 747,431.40 = 245,616.20 : x
  2. Step 2: Convert to fraction form
    498,214.70/747,431.40 = 245,616.20/x
  3. Step 3: Cross multiply
    498,214.70x = 747,431.40 × 245,616.20
  4. Step 4: Simplify right side
    498,214.70x = 183,581,260,228.68
  5. Step 5: Solve for x
    x = 183,581,260,228.68/498,214.70
  6. Step 6: Final answer
    x = 368,478.21

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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.