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Finding the Fourth Proportional to 223,811.40, 335,717.10 and 215,209.80

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Solution

The fourth proportional to 223,811.40, 335,717.10 and 215,209.80 is: 322,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,811.40 : 335,717.10 = 215,209.80 : x
  2. Step 2: Convert to fraction form
    223,811.40/335,717.10 = 215,209.80/x
  3. Step 3: Cross multiply
    223,811.40x = 335,717.10 × 215,209.80
  4. Step 4: Simplify right side
    223,811.40x = 72,249,609,947.58
  5. Step 5: Solve for x
    x = 72,249,609,947.58/223,811.40
  6. Step 6: Final answer
    x = 322,814.70

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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.