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Finding the Fourth Proportional to 391,701.02, 540,499.02 and 238,683.44

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Solution

The fourth proportional to 391,701.02, 540,499.02 and 238,683.44 is: 329,353.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,701.02 : 540,499.02 = 238,683.44 : x
  2. Step 2: Convert to fraction form
    391,701.02/540,499.02 = 238,683.44/x
  3. Step 3: Cross multiply
    391,701.02x = 540,499.02 × 238,683.44
  4. Step 4: Simplify right side
    391,701.02x = 129,008,165,410.23
  5. Step 5: Solve for x
    x = 129,008,165,410.23/391,701.02
  6. Step 6: Final answer
    x = 329,353.66

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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.