Home / 287,430.18-396,665.88-160,105.74

Finding the Fourth Proportional to 287,430.18, 396,665.88 and 160,105.74

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Solution

The fourth proportional to 287,430.18, 396,665.88 and 160,105.74 is: 220,952.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,430.18 : 396,665.88 = 160,105.74 : x
  2. Step 2: Convert to fraction form
    287,430.18/396,665.88 = 160,105.74/x
  3. Step 3: Cross multiply
    287,430.18x = 396,665.88 × 160,105.74
  4. Step 4: Simplify right side
    287,430.18x = 63,508,484,250.15
  5. Step 5: Solve for x
    x = 63,508,484,250.15/287,430.18
  6. Step 6: Final answer
    x = 220,952.73

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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.