Home / 287,483.14-396,721.38-158,433.56

Finding the Fourth Proportional to 287,483.14, 396,721.38 and 158,433.56

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Solution

The fourth proportional to 287,483.14, 396,721.38 and 158,433.56 is: 218,635.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,483.14 : 396,721.38 = 158,433.56 : x
  2. Step 2: Convert to fraction form
    287,483.14/396,721.38 = 158,433.56/x
  3. Step 3: Cross multiply
    287,483.14x = 396,721.38 × 158,433.56
  4. Step 4: Simplify right side
    287,483.14x = 62,853,982,000.11
  5. Step 5: Solve for x
    x = 62,853,982,000.11/287,483.14
  6. Step 6: Final answer
    x = 218,635.37

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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.