Home / 287,769.06-431,284.17-137,784.60

Finding the Fourth Proportional to 287,769.06, 431,284.17 and 137,784.60

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Solution

The fourth proportional to 287,769.06, 431,284.17 and 137,784.60 is: 206,500.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,769.06 : 431,284.17 = 137,784.60 : x
  2. Step 2: Convert to fraction form
    287,769.06/431,284.17 = 137,784.60/x
  3. Step 3: Cross multiply
    287,769.06x = 431,284.17 × 137,784.60
  4. Step 4: Simplify right side
    287,769.06x = 59,424,316,849.78
  5. Step 5: Solve for x
    x = 59,424,316,849.78/287,769.06
  6. Step 6: Final answer
    x = 206,500.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.