Home / 287,358.83-396,539.61-158,272.18

Finding the Fourth Proportional to 287,358.83, 396,539.61 and 158,272.18

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Solution

The fourth proportional to 287,358.83, 396,539.61 and 158,272.18 is: 218,407.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,358.83 : 396,539.61 = 158,272.18 : x
  2. Step 2: Convert to fraction form
    287,358.83/396,539.61 = 158,272.18/x
  3. Step 3: Cross multiply
    287,358.83x = 396,539.61 × 158,272.18
  4. Step 4: Simplify right side
    287,358.83x = 62,761,189,176.72
  5. Step 5: Solve for x
    x = 62,761,189,176.72/287,358.83
  6. Step 6: Final answer
    x = 218,407.03

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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.