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Finding the Fourth Proportional to 442,934.40, 664,293.60 and 127,358.40

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Solution

The fourth proportional to 442,934.40, 664,293.60 and 127,358.40 is: 191,006.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,934.40 : 664,293.60 = 127,358.40 : x
  2. Step 2: Convert to fraction form
    442,934.40/664,293.60 = 127,358.40/x
  3. Step 3: Cross multiply
    442,934.40x = 664,293.60 × 127,358.40
  4. Step 4: Simplify right side
    442,934.40x = 84,603,370,026.24
  5. Step 5: Solve for x
    x = 84,603,370,026.24/442,934.40
  6. Step 6: Final answer
    x = 191,006.55

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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.