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Finding the Fourth Proportional to 287,371.52, 396,572.69 and 160,047.11

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Solution

The fourth proportional to 287,371.52, 396,572.69 and 160,047.11 is: 220,865.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,371.52 : 396,572.69 = 160,047.11 : x
  2. Step 2: Convert to fraction form
    287,371.52/396,572.69 = 160,047.11/x
  3. Step 3: Cross multiply
    287,371.52x = 396,572.69 × 160,047.11
  4. Step 4: Simplify right side
    287,371.52x = 63,470,312,939.43
  5. Step 5: Solve for x
    x = 63,470,312,939.43/287,371.52
  6. Step 6: Final answer
    x = 220,865.01

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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.