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Finding the Fourth Proportional to 191,448.56, 287,269.74 and 79,209.33

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Solution

The fourth proportional to 191,448.56, 287,269.74 and 79,209.33 is: 118,854.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,448.56 : 287,269.74 = 79,209.33 : x
  2. Step 2: Convert to fraction form
    191,448.56/287,269.74 = 79,209.33/x
  3. Step 3: Cross multiply
    191,448.56x = 287,269.74 × 79,209.33
  4. Step 4: Simplify right side
    191,448.56x = 22,754,442,557.41
  5. Step 5: Solve for x
    x = 22,754,442,557.41/191,448.56
  6. Step 6: Final answer
    x = 118,854.08

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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.