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Finding the Fourth Proportional to 381,985.40, 573,237.30 and 248,540.60

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Solution

The fourth proportional to 381,985.40, 573,237.30 and 248,540.60 is: 372,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,985.40 : 573,237.30 = 248,540.60 : x
  2. Step 2: Convert to fraction form
    381,985.40/573,237.30 = 248,540.60/x
  3. Step 3: Cross multiply
    381,985.40x = 573,237.30 × 248,540.60
  4. Step 4: Simplify right side
    381,985.40x = 142,472,742,484.38
  5. Step 5: Solve for x
    x = 142,472,742,484.38/381,985.40
  6. Step 6: Final answer
    x = 372,979.55

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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.