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Finding the Fourth Proportional to 534,239.20, 801,812.40 and 218,922.40

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Solution

The fourth proportional to 534,239.20, 801,812.40 and 218,922.40 is: 328,569.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,239.20 : 801,812.40 = 218,922.40 : x
  2. Step 2: Convert to fraction form
    534,239.20/801,812.40 = 218,922.40/x
  3. Step 3: Cross multiply
    534,239.20x = 801,812.40 × 218,922.40
  4. Step 4: Simplify right side
    534,239.20x = 175,534,694,957.76
  5. Step 5: Solve for x
    x = 175,534,694,957.76/534,239.20
  6. Step 6: Final answer
    x = 328,569.48

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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.