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Finding the Fourth Proportional to 219,311.03, 328,978.17 and 61,551.79

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Solution

The fourth proportional to 219,311.03, 328,978.17 and 61,551.79 is: 92,330.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,311.03 : 328,978.17 = 61,551.79 : x
  2. Step 2: Convert to fraction form
    219,311.03/328,978.17 = 61,551.79/x
  3. Step 3: Cross multiply
    219,311.03x = 328,978.17 × 61,551.79
  4. Step 4: Simplify right side
    219,311.03x = 20,249,194,411.98
  5. Step 5: Solve for x
    x = 20,249,194,411.98/219,311.03
  6. Step 6: Final answer
    x = 92,330.94

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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.