Home / 257,072.20-386,069.10-187,030.60

Finding the Fourth Proportional to 257,072.20, 386,069.10 and 187,030.60

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Solution

The fourth proportional to 257,072.20, 386,069.10 and 187,030.60 is: 280,881.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,072.20 : 386,069.10 = 187,030.60 : x
  2. Step 2: Convert to fraction form
    257,072.20/386,069.10 = 187,030.60/x
  3. Step 3: Cross multiply
    257,072.20x = 386,069.10 × 187,030.60
  4. Step 4: Simplify right side
    257,072.20x = 72,206,735,414.46
  5. Step 5: Solve for x
    x = 72,206,735,414.46/257,072.20
  6. Step 6: Final answer
    x = 280,881.15

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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.