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Finding the Fourth Proportional to 351,456.80, 526,468.40 and 217,927.20

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Solution

The fourth proportional to 351,456.80, 526,468.40 and 217,927.20 is: 326,446.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,456.80 : 526,468.40 = 217,927.20 : x
  2. Step 2: Convert to fraction form
    351,456.80/526,468.40 = 217,927.20/x
  3. Step 3: Cross multiply
    351,456.80x = 526,468.40 × 217,927.20
  4. Step 4: Simplify right side
    351,456.80x = 114,731,784,300.48
  5. Step 5: Solve for x
    x = 114,731,784,300.48/351,456.80
  6. Step 6: Final answer
    x = 326,446.34

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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.