Home / 287,136.09-396,251.60-158,089.59

Finding the Fourth Proportional to 287,136.09, 396,251.60 and 158,089.59

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Solution

The fourth proportional to 287,136.09, 396,251.60 and 158,089.59 is: 218,165.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,136.09 : 396,251.60 = 158,089.59 : x
  2. Step 2: Convert to fraction form
    287,136.09/396,251.60 = 158,089.59/x
  3. Step 3: Cross multiply
    287,136.09x = 396,251.60 × 158,089.59
  4. Step 4: Simplify right side
    287,136.09x = 62,643,252,190.40
  5. Step 5: Solve for x
    x = 62,643,252,190.40/287,136.09
  6. Step 6: Final answer
    x = 218,165.72

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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.