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Finding the Fourth Proportional to 266,462.60, 399,037.80 and 126,057.20

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Solution

The fourth proportional to 266,462.60, 399,037.80 and 126,057.20 is: 188,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,462.60 : 399,037.80 = 126,057.20 : x
  2. Step 2: Convert to fraction form
    266,462.60/399,037.80 = 126,057.20/x
  3. Step 3: Cross multiply
    266,462.60x = 399,037.80 × 126,057.20
  4. Step 4: Simplify right side
    266,462.60x = 50,301,587,762.16
  5. Step 5: Solve for x
    x = 50,301,587,762.16/266,462.60
  6. Step 6: Final answer
    x = 188,775.41

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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.