Home / 280,506.13-387,046.35-159,640.23

Finding the Fourth Proportional to 280,506.13, 387,046.35 and 159,640.23

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Solution

The fourth proportional to 280,506.13, 387,046.35 and 159,640.23 is: 220,273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,506.13 : 387,046.35 = 159,640.23 : x
  2. Step 2: Convert to fraction form
    280,506.13/387,046.35 = 159,640.23/x
  3. Step 3: Cross multiply
    280,506.13x = 387,046.35 × 159,640.23
  4. Step 4: Simplify right side
    280,506.13x = 61,788,168,334.66
  5. Step 5: Solve for x
    x = 61,788,168,334.66/280,506.13
  6. Step 6: Final answer
    x = 220,273.86

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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.