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Finding the Fourth Proportional to 219,036.70, 328,595.61 and 69,314.68

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Solution

The fourth proportional to 219,036.70, 328,595.61 and 69,314.68 is: 103,984.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,036.70 : 328,595.61 = 69,314.68 : x
  2. Step 2: Convert to fraction form
    219,036.70/328,595.61 = 69,314.68/x
  3. Step 3: Cross multiply
    219,036.70x = 328,595.61 × 69,314.68
  4. Step 4: Simplify right side
    219,036.70x = 22,776,499,556.55
  5. Step 5: Solve for x
    x = 22,776,499,556.55/219,036.70
  6. Step 6: Final answer
    x = 103,984.86

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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.