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Finding the Fourth Proportional to 660,786.66, 991,139.85 and 234,343.62

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Solution

The fourth proportional to 660,786.66, 991,139.85 and 234,343.62 is: 351,501.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,786.66 : 991,139.85 = 234,343.62 : x
  2. Step 2: Convert to fraction form
    660,786.66/991,139.85 = 234,343.62/x
  3. Step 3: Cross multiply
    660,786.66x = 991,139.85 × 234,343.62
  4. Step 4: Simplify right side
    660,786.66x = 232,267,300,375.26
  5. Step 5: Solve for x
    x = 232,267,300,375.26/660,786.66
  6. Step 6: Final answer
    x = 351,501.19

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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.