Home / 287,101.46-396,191.76-159,774.32

Finding the Fourth Proportional to 287,101.46, 396,191.76 and 159,774.32

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Solution

The fourth proportional to 287,101.46, 396,191.76 and 159,774.32 is: 220,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,101.46 : 396,191.76 = 159,774.32 : x
  2. Step 2: Convert to fraction form
    287,101.46/396,191.76 = 159,774.32/x
  3. Step 3: Cross multiply
    287,101.46x = 396,191.76 × 159,774.32
  4. Step 4: Simplify right side
    287,101.46x = 63,301,269,434.93
  5. Step 5: Solve for x
    x = 63,301,269,434.93/287,101.46
  6. Step 6: Final answer
    x = 220,483.97

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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.