Home / 287,445.60-396,687.18-160,121.24

Finding the Fourth Proportional to 287,445.60, 396,687.18 and 160,121.24

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Solution

The fourth proportional to 287,445.60, 396,687.18 and 160,121.24 is: 220,974.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,445.60 : 396,687.18 = 160,121.24 : x
  2. Step 2: Convert to fraction form
    287,445.60/396,687.18 = 160,121.24/x
  3. Step 3: Cross multiply
    287,445.60x = 396,687.18 × 160,121.24
  4. Step 4: Simplify right side
    287,445.60x = 63,518,043,153.70
  5. Step 5: Solve for x
    x = 63,518,043,153.70/287,445.60
  6. Step 6: Final answer
    x = 220,974.14

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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.