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Finding the Fourth Proportional to 209,314.78, 288,752.88 and 124,371.70

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Solution

The fourth proportional to 209,314.78, 288,752.88 and 124,371.70 is: 171,572.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,314.78 : 288,752.88 = 124,371.70 : x
  2. Step 2: Convert to fraction form
    209,314.78/288,752.88 = 124,371.70/x
  3. Step 3: Cross multiply
    209,314.78x = 288,752.88 × 124,371.70
  4. Step 4: Simplify right side
    209,314.78x = 35,912,686,565.50
  5. Step 5: Solve for x
    x = 35,912,686,565.50/209,314.78
  6. Step 6: Final answer
    x = 171,572.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.