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Finding the Fourth Proportional to 266,023.40, 399,071.55 and 88,511.90

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Solution

The fourth proportional to 266,023.40, 399,071.55 and 88,511.90 is: 132,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,023.40 : 399,071.55 = 88,511.90 : x
  2. Step 2: Convert to fraction form
    266,023.40/399,071.55 = 88,511.90/x
  3. Step 3: Cross multiply
    266,023.40x = 399,071.55 × 88,511.90
  4. Step 4: Simplify right side
    266,023.40x = 35,322,581,126.45
  5. Step 5: Solve for x
    x = 35,322,581,126.45/266,023.40
  6. Step 6: Final answer
    x = 132,779.98

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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.