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Finding the Fourth Proportional to 219,234.60, 328,851.90 and 71,490.60

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Solution

The fourth proportional to 219,234.60, 328,851.90 and 71,490.60 is: 107,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,234.60 : 328,851.90 = 71,490.60 : x
  2. Step 2: Convert to fraction form
    219,234.60/328,851.90 = 71,490.60/x
  3. Step 3: Cross multiply
    219,234.60x = 328,851.90 × 71,490.60
  4. Step 4: Simplify right side
    219,234.60x = 23,509,819,642.14
  5. Step 5: Solve for x
    x = 23,509,819,642.14/219,234.60
  6. Step 6: Final answer
    x = 107,235.90

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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.