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Finding the Fourth Proportional to 442,574.91, 663,845.04 and 127,031.70

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Solution

The fourth proportional to 442,574.91, 663,845.04 and 127,031.70 is: 190,542.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,574.91 : 663,845.04 = 127,031.70 : x
  2. Step 2: Convert to fraction form
    442,574.91/663,845.04 = 127,031.70/x
  3. Step 3: Cross multiply
    442,574.91x = 663,845.04 × 127,031.70
  4. Step 4: Simplify right side
    442,574.91x = 84,329,363,967.77
  5. Step 5: Solve for x
    x = 84,329,363,967.77/442,574.91
  6. Step 6: Final answer
    x = 190,542.58

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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.