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Finding the Fourth Proportional to 191,419.25, 287,126.92 and 49,263.97

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Solution

The fourth proportional to 191,419.25, 287,126.92 and 49,263.97 is: 73,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,419.25 : 287,126.92 = 49,263.97 : x
  2. Step 2: Convert to fraction form
    191,419.25/287,126.92 = 49,263.97/x
  3. Step 3: Cross multiply
    191,419.25x = 287,126.92 × 49,263.97
  4. Step 4: Simplify right side
    191,419.25x = 14,145,011,132.10
  5. Step 5: Solve for x
    x = 14,145,011,132.10/191,419.25
  6. Step 6: Final answer
    x = 73,895.45

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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.