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Finding the Fourth Proportional to 287,301.90, 396,472.88 and 158,237.91

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Solution

The fourth proportional to 287,301.90, 396,472.88 and 158,237.91 is: 218,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,301.90 : 396,472.88 = 158,237.91 : x
  2. Step 2: Convert to fraction form
    287,301.90/396,472.88 = 158,237.91/x
  3. Step 3: Cross multiply
    287,301.90x = 396,472.88 × 158,237.91
  4. Step 4: Simplify right side
    287,301.90x = 62,737,039,111.69
  5. Step 5: Solve for x
    x = 62,737,039,111.69/287,301.90
  6. Step 6: Final answer
    x = 218,366.25

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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.