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Finding the Fourth Proportional to 324,695.20, 486,812.40 and 124,938.40

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Solution

The fourth proportional to 324,695.20, 486,812.40 and 124,938.40 is: 187,318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,695.20 : 486,812.40 = 124,938.40 : x
  2. Step 2: Convert to fraction form
    324,695.20/486,812.40 = 124,938.40/x
  3. Step 3: Cross multiply
    324,695.20x = 486,812.40 × 124,938.40
  4. Step 4: Simplify right side
    324,695.20x = 60,821,562,356.16
  5. Step 5: Solve for x
    x = 60,821,562,356.16/324,695.20
  6. Step 6: Final answer
    x = 187,318.95

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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.