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Finding the Fourth Proportional to 534,139.20, 801,662.40 and 218,822.40

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Solution

The fourth proportional to 534,139.20, 801,662.40 and 218,822.40 is: 328,419.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,139.20 : 801,662.40 = 218,822.40 : x
  2. Step 2: Convert to fraction form
    534,139.20/801,662.40 = 218,822.40/x
  3. Step 3: Cross multiply
    534,139.20x = 801,662.40 × 218,822.40
  4. Step 4: Simplify right side
    534,139.20x = 175,421,690,357.76
  5. Step 5: Solve for x
    x = 175,421,690,357.76/534,139.20
  6. Step 6: Final answer
    x = 328,419.43

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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.