Home / 287,146.03-396,254.78-159,818.89

Finding the Fourth Proportional to 287,146.03, 396,254.78 and 159,818.89

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Solution

The fourth proportional to 287,146.03, 396,254.78 and 159,818.89 is: 220,546.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,146.03 : 396,254.78 = 159,818.89 : x
  2. Step 2: Convert to fraction form
    287,146.03/396,254.78 = 159,818.89/x
  3. Step 3: Cross multiply
    287,146.03x = 396,254.78 × 159,818.89
  4. Step 4: Simplify right side
    287,146.03x = 63,328,997,906.38
  5. Step 5: Solve for x
    x = 63,328,997,906.38/287,146.03
  6. Step 6: Final answer
    x = 220,546.31

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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.