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Finding the Fourth Proportional to 216,036.60, 324,200.70 and 140,973.90

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Solution

The fourth proportional to 216,036.60, 324,200.70 and 140,973.90 is: 211,555.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,036.60 : 324,200.70 = 140,973.90 : x
  2. Step 2: Convert to fraction form
    216,036.60/324,200.70 = 140,973.90/x
  3. Step 3: Cross multiply
    216,036.60x = 324,200.70 × 140,973.90
  4. Step 4: Simplify right side
    216,036.60x = 45,703,837,061.73
  5. Step 5: Solve for x
    x = 45,703,837,061.73/216,036.60
  6. Step 6: Final answer
    x = 211,555.99

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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.