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Finding the Fourth Proportional to 288,696.60, 398,385.20 and 159,627.60

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Solution

The fourth proportional to 288,696.60, 398,385.20 and 159,627.60 is: 220,277.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,696.60 : 398,385.20 = 159,627.60 : x
  2. Step 2: Convert to fraction form
    288,696.60/398,385.20 = 159,627.60/x
  3. Step 3: Cross multiply
    288,696.60x = 398,385.20 × 159,627.60
  4. Step 4: Simplify right side
    288,696.60x = 63,593,273,351.52
  5. Step 5: Solve for x
    x = 63,593,273,351.52/288,696.60
  6. Step 6: Final answer
    x = 220,277.18

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1.5x scale

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.