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Finding the Fourth Proportional to 357,687.22, 536,529.75 and 91,447.78

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Solution

The fourth proportional to 357,687.22, 536,529.75 and 91,447.78 is: 137,171.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,687.22 : 536,529.75 = 91,447.78 : x
  2. Step 2: Convert to fraction form
    357,687.22/536,529.75 = 91,447.78/x
  3. Step 3: Cross multiply
    357,687.22x = 536,529.75 × 91,447.78
  4. Step 4: Simplify right side
    357,687.22x = 49,064,454,541.46
  5. Step 5: Solve for x
    x = 49,064,454,541.46/357,687.22
  6. Step 6: Final answer
    x = 137,171.39

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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.