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Finding the Fourth Proportional to 306,997.66, 460,545.71 and 129,530.81

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Solution

The fourth proportional to 306,997.66, 460,545.71 and 129,530.81 is: 194,316.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,997.66 : 460,545.71 = 129,530.81 : x
  2. Step 2: Convert to fraction form
    306,997.66/460,545.71 = 129,530.81/x
  3. Step 3: Cross multiply
    306,997.66x = 460,545.71 × 129,530.81
  4. Step 4: Simplify right side
    306,997.66x = 59,654,858,858.33
  5. Step 5: Solve for x
    x = 59,654,858,858.33/306,997.66
  6. Step 6: Final answer
    x = 194,316.98

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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.