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Finding the Fourth Proportional to 266,041.71, 399,087.15 and 106,079.04

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Solution

The fourth proportional to 266,041.71, 399,087.15 and 106,079.04 is: 159,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,041.71 : 399,087.15 = 106,079.04 : x
  2. Step 2: Convert to fraction form
    266,041.71/399,087.15 = 106,079.04/x
  3. Step 3: Cross multiply
    266,041.71x = 399,087.15 × 106,079.04
  4. Step 4: Simplify right side
    266,041.71x = 42,334,781,748.34
  5. Step 5: Solve for x
    x = 42,334,781,748.34/266,041.71
  6. Step 6: Final answer
    x = 159,128.36

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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.