Home / 280,154.10-419,981.45-102,619.55

Finding the Fourth Proportional to 280,154.10, 419,981.45 and 102,619.55

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Solution

The fourth proportional to 280,154.10, 419,981.45 and 102,619.55 is: 153,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,154.10 : 419,981.45 = 102,619.55 : x
  2. Step 2: Convert to fraction form
    280,154.10/419,981.45 = 102,619.55/x
  3. Step 3: Cross multiply
    280,154.10x = 419,981.45 × 102,619.55
  4. Step 4: Simplify right side
    280,154.10x = 43,098,304,794.34
  5. Step 5: Solve for x
    x = 43,098,304,794.34/280,154.10
  6. Step 6: Final answer
    x = 153,837.85

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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.