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Finding the Fourth Proportional to 218,490.55, 301,522.55 and 123,000.59

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Solution

The fourth proportional to 218,490.55, 301,522.55 and 123,000.59 is: 169,743.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,490.55 : 301,522.55 = 123,000.59 : x
  2. Step 2: Convert to fraction form
    218,490.55/301,522.55 = 123,000.59/x
  3. Step 3: Cross multiply
    218,490.55x = 301,522.55 × 123,000.59
  4. Step 4: Simplify right side
    218,490.55x = 37,087,451,687.11
  5. Step 5: Solve for x
    x = 37,087,451,687.11/218,490.55
  6. Step 6: Final answer
    x = 169,743.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.