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Finding the Fourth Proportional to 357,779.88, 536,688.12 and 91,542.72

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Solution

The fourth proportional to 357,779.88, 536,688.12 and 91,542.72 is: 137,318.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,779.88 : 536,688.12 = 91,542.72 : x
  2. Step 2: Convert to fraction form
    357,779.88/536,688.12 = 91,542.72/x
  3. Step 3: Cross multiply
    357,779.88x = 536,688.12 × 91,542.72
  4. Step 4: Simplify right side
    357,779.88x = 49,129,890,296.49
  5. Step 5: Solve for x
    x = 49,129,890,296.49/357,779.88
  6. Step 6: Final answer
    x = 137,318.76

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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.