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Finding the Fourth Proportional to 220,700.50, 331,051.56 and 54,488.50

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Solution

The fourth proportional to 220,700.50, 331,051.56 and 54,488.50 is: 81,732.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,700.50 : 331,051.56 = 54,488.50 : x
  2. Step 2: Convert to fraction form
    220,700.50/331,051.56 = 54,488.50/x
  3. Step 3: Cross multiply
    220,700.50x = 331,051.56 × 54,488.50
  4. Step 4: Simplify right side
    220,700.50x = 18,038,502,927.06
  5. Step 5: Solve for x
    x = 18,038,502,927.06/220,700.50
  6. Step 6: Final answer
    x = 81,732.95

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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.