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Finding the Fourth Proportional to 266,090.40, 399,135.60 and 88,603.20

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Solution

The fourth proportional to 266,090.40, 399,135.60 and 88,603.20 is: 132,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,090.40 : 399,135.60 = 88,603.20 : x
  2. Step 2: Convert to fraction form
    266,090.40/399,135.60 = 88,603.20/x
  3. Step 3: Cross multiply
    266,090.40x = 399,135.60 × 88,603.20
  4. Step 4: Simplify right side
    266,090.40x = 35,364,691,393.92
  5. Step 5: Solve for x
    x = 35,364,691,393.92/266,090.40
  6. Step 6: Final answer
    x = 132,904.80

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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.