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Finding the Fourth Proportional to 357,353.38, 536,044.65 and 91,120.80

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Solution

The fourth proportional to 357,353.38, 536,044.65 and 91,120.80 is: 136,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,353.38 : 536,044.65 = 91,120.80 : x
  2. Step 2: Convert to fraction form
    357,353.38/536,044.65 = 91,120.80/x
  3. Step 3: Cross multiply
    357,353.38x = 536,044.65 × 91,120.80
  4. Step 4: Simplify right side
    357,353.38x = 48,844,817,343.72
  5. Step 5: Solve for x
    x = 48,844,817,343.72/357,353.38
  6. Step 6: Final answer
    x = 136,684.92

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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.