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Finding the Fourth Proportional to 317,480.40, 476,125.56 and 127,879.92

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Solution

The fourth proportional to 317,480.40, 476,125.56 and 127,879.92 is: 191,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,480.40 : 476,125.56 = 127,879.92 : x
  2. Step 2: Convert to fraction form
    317,480.40/476,125.56 = 127,879.92/x
  3. Step 3: Cross multiply
    317,480.40x = 476,125.56 × 127,879.92
  4. Step 4: Simplify right side
    317,480.40x = 60,886,898,522.76
  5. Step 5: Solve for x
    x = 60,886,898,522.76/317,480.40
  6. Step 6: Final answer
    x = 191,781.60

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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.