Home / 287,360.91-396,542.45-158,274.25

Finding the Fourth Proportional to 287,360.91, 396,542.45 and 158,274.25

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Solution

The fourth proportional to 287,360.91, 396,542.45 and 158,274.25 is: 218,409.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,360.91 : 396,542.45 = 158,274.25 : x
  2. Step 2: Convert to fraction form
    287,360.91/396,542.45 = 158,274.25/x
  3. Step 3: Cross multiply
    287,360.91x = 396,542.45 × 158,274.25
  4. Step 4: Simplify right side
    287,360.91x = 62,762,458,866.91
  5. Step 5: Solve for x
    x = 62,762,458,866.91/287,360.91
  6. Step 6: Final answer
    x = 218,409.87

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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.