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Finding the Fourth Proportional to 220,545.86, 330,715.10 and 154,061.06

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Solution

The fourth proportional to 220,545.86, 330,715.10 and 154,061.06 is: 231,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,545.86 : 330,715.10 = 154,061.06 : x
  2. Step 2: Convert to fraction form
    220,545.86/330,715.10 = 154,061.06/x
  3. Step 3: Cross multiply
    220,545.86x = 330,715.10 × 154,061.06
  4. Step 4: Simplify right side
    220,545.86x = 50,950,317,595.58
  5. Step 5: Solve for x
    x = 50,950,317,595.58/220,545.86
  6. Step 6: Final answer
    x = 231,019.16

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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.