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Finding the Fourth Proportional to 218,545.56, 301,590 and 123,061.68

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Solution

The fourth proportional to 218,545.56, 301,590 and 123,061.68 is: 169,823.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,545.56 : 301,590 = 123,061.68 : x
  2. Step 2: Convert to fraction form
    218,545.56/301,590 = 123,061.68/x
  3. Step 3: Cross multiply
    218,545.56x = 301,590 × 123,061.68
  4. Step 4: Simplify right side
    218,545.56x = 37,114,172,071.20
  5. Step 5: Solve for x
    x = 37,114,172,071.20/218,545.56
  6. Step 6: Final answer
    x = 169,823.50

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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.