Home / 218,914.23-328,429.85-78,674.07

Finding the Fourth Proportional to 218,914.23, 328,429.85 and 78,674.07

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Solution

The fourth proportional to 218,914.23, 328,429.85 and 78,674.07 is: 118,032.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,914.23 : 328,429.85 = 78,674.07 : x
  2. Step 2: Convert to fraction form
    218,914.23/328,429.85 = 78,674.07/x
  3. Step 3: Cross multiply
    218,914.23x = 328,429.85 × 78,674.07
  4. Step 4: Simplify right side
    218,914.23x = 25,838,912,615.62
  5. Step 5: Solve for x
    x = 25,838,912,615.62/218,914.23
  6. Step 6: Final answer
    x = 118,032.13

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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.