Home / 218,814.40-328,221.65-69,066.36

Finding the Fourth Proportional to 218,814.40, 328,221.65 and 69,066.36

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Solution

The fourth proportional to 218,814.40, 328,221.65 and 69,066.36 is: 103,599.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,814.40 : 328,221.65 = 69,066.36 : x
  2. Step 2: Convert to fraction form
    218,814.40/328,221.65 = 69,066.36/x
  3. Step 3: Cross multiply
    218,814.40x = 328,221.65 × 69,066.36
  4. Step 4: Simplify right side
    218,814.40x = 22,669,074,811.36
  5. Step 5: Solve for x
    x = 22,669,074,811.36/218,814.40
  6. Step 6: Final answer
    x = 103,599.56

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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.