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Finding the Fourth Proportional to 191,519.40, 287,279.10 and 49,364.40

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Solution

The fourth proportional to 191,519.40, 287,279.10 and 49,364.40 is: 74,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,519.40 : 287,279.10 = 49,364.40 : x
  2. Step 2: Convert to fraction form
    191,519.40/287,279.10 = 49,364.40/x
  3. Step 3: Cross multiply
    191,519.40x = 287,279.10 × 49,364.40
  4. Step 4: Simplify right side
    191,519.40x = 14,181,360,404.04
  5. Step 5: Solve for x
    x = 14,181,360,404.04/191,519.40
  6. Step 6: Final answer
    x = 74,046.60

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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.