Home / 218,701.40-328,065.06-68,946.44

Finding the Fourth Proportional to 218,701.40, 328,065.06 and 68,946.44

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Solution

The fourth proportional to 218,701.40, 328,065.06 and 68,946.44 is: 103,423.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,701.40 : 328,065.06 = 68,946.44 : x
  2. Step 2: Convert to fraction form
    218,701.40/328,065.06 = 68,946.44/x
  3. Step 3: Cross multiply
    218,701.40x = 328,065.06 × 68,946.44
  4. Step 4: Simplify right side
    218,701.40x = 22,618,917,975.39
  5. Step 5: Solve for x
    x = 22,618,917,975.39/218,701.40
  6. Step 6: Final answer
    x = 103,423.75

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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.