Home / 402,278.40-603,417.06-102,759.20

Finding the Fourth Proportional to 402,278.40, 603,417.06 and 102,759.20

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Solution

The fourth proportional to 402,278.40, 603,417.06 and 102,759.20 is: 154,138.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,278.40 : 603,417.06 = 102,759.20 : x
  2. Step 2: Convert to fraction form
    402,278.40/603,417.06 = 102,759.20/x
  3. Step 3: Cross multiply
    402,278.40x = 603,417.06 × 102,759.20
  4. Step 4: Simplify right side
    402,278.40x = 62,006,654,351.95
  5. Step 5: Solve for x
    x = 62,006,654,351.95/402,278.40
  6. Step 6: Final answer
    x = 154,138.66

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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.