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Finding the Fourth Proportional to 216,444.65, 324,738.95 and 136,390.11

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Solution

The fourth proportional to 216,444.65, 324,738.95 and 136,390.11 is: 204,630.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,444.65 : 324,738.95 = 136,390.11 : x
  2. Step 2: Convert to fraction form
    216,444.65/324,738.95 = 136,390.11/x
  3. Step 3: Cross multiply
    216,444.65x = 324,738.95 × 136,390.11
  4. Step 4: Simplify right side
    216,444.65x = 44,291,180,429.83
  5. Step 5: Solve for x
    x = 44,291,180,429.83/216,444.65
  6. Step 6: Final answer
    x = 204,630.52

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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.