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Finding the Fourth Proportional to 381,931.76, 526,846.53 and 238,442.69

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Solution

The fourth proportional to 381,931.76, 526,846.53 and 238,442.69 is: 328,914.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,931.76 : 526,846.53 = 238,442.69 : x
  2. Step 2: Convert to fraction form
    381,931.76/526,846.53 = 238,442.69/x
  3. Step 3: Cross multiply
    381,931.76x = 526,846.53 × 238,442.69
  4. Step 4: Simplify right side
    381,931.76x = 125,622,705,147.48
  5. Step 5: Solve for x
    x = 125,622,705,147.48/381,931.76
  6. Step 6: Final answer
    x = 328,914.00

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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.