Home / 287,072.39-396,156.76-158,008.10

Finding the Fourth Proportional to 287,072.39, 396,156.76 and 158,008.10

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Solution

The fourth proportional to 287,072.39, 396,156.76 and 158,008.10 is: 218,049.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,072.39 : 396,156.76 = 158,008.10 : x
  2. Step 2: Convert to fraction form
    287,072.39/396,156.76 = 158,008.10/x
  3. Step 3: Cross multiply
    287,072.39x = 396,156.76 × 158,008.10
  4. Step 4: Simplify right side
    287,072.39x = 62,595,976,802.33
  5. Step 5: Solve for x
    x = 62,595,976,802.33/287,072.39
  6. Step 6: Final answer
    x = 218,049.45

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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.