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Finding the Fourth Proportional to 356,499.76, 534,750.60 and 90,260.32

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Solution

The fourth proportional to 356,499.76, 534,750.60 and 90,260.32 is: 135,390.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,499.76 : 534,750.60 = 90,260.32 : x
  2. Step 2: Convert to fraction form
    356,499.76/534,750.60 = 90,260.32/x
  3. Step 3: Cross multiply
    356,499.76x = 534,750.60 × 90,260.32
  4. Step 4: Simplify right side
    356,499.76x = 48,266,760,276.19
  5. Step 5: Solve for x
    x = 48,266,760,276.19/356,499.76
  6. Step 6: Final answer
    x = 135,390.72

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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.