Home / 287,001.72-396,062.37-159,677.28

Finding the Fourth Proportional to 287,001.72, 396,062.37 and 159,677.28

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Solution

The fourth proportional to 287,001.72, 396,062.37 and 159,677.28 is: 220,354.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,001.72 : 396,062.37 = 159,677.28 : x
  2. Step 2: Convert to fraction form
    287,001.72/396,062.37 = 159,677.28/x
  3. Step 3: Cross multiply
    287,001.72x = 396,062.37 × 159,677.28
  4. Step 4: Simplify right side
    287,001.72x = 63,242,161,951.95
  5. Step 5: Solve for x
    x = 63,242,161,951.95/287,001.72
  6. Step 6: Final answer
    x = 220,354.64

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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.