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Finding the Fourth Proportional to 357,517.64, 536,275.99 and 91,278.20

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Solution

The fourth proportional to 357,517.64, 536,275.99 and 91,278.20 is: 136,917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,517.64 : 536,275.99 = 91,278.20 : x
  2. Step 2: Convert to fraction form
    357,517.64/536,275.99 = 91,278.20/x
  3. Step 3: Cross multiply
    357,517.64x = 536,275.99 × 91,278.20
  4. Step 4: Simplify right side
    357,517.64x = 48,950,307,070.42
  5. Step 5: Solve for x
    x = 48,950,307,070.42/357,517.64
  6. Step 6: Final answer
    x = 136,917.18

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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.