Home / 287,518.38-396,778.06-158,461.59

Finding the Fourth Proportional to 287,518.38, 396,778.06 and 158,461.59

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Solution

The fourth proportional to 287,518.38, 396,778.06 and 158,461.59 is: 218,678.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,518.38 : 396,778.06 = 158,461.59 : x
  2. Step 2: Convert to fraction form
    287,518.38/396,778.06 = 158,461.59/x
  3. Step 3: Cross multiply
    287,518.38x = 396,778.06 × 158,461.59
  4. Step 4: Simplify right side
    287,518.38x = 62,874,079,884.67
  5. Step 5: Solve for x
    x = 62,874,079,884.67/287,518.38
  6. Step 6: Final answer
    x = 218,678.47

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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.