Home / 218,928.72-328,391.13-69,169.02

Finding the Fourth Proportional to 218,928.72, 328,391.13 and 69,169.02

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Solution

The fourth proportional to 218,928.72, 328,391.13 and 69,169.02 is: 103,752.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,928.72 : 328,391.13 = 69,169.02 : x
  2. Step 2: Convert to fraction form
    218,928.72/328,391.13 = 69,169.02/x
  3. Step 3: Cross multiply
    218,928.72x = 328,391.13 × 69,169.02
  4. Step 4: Simplify right side
    218,928.72x = 22,714,492,638.79
  5. Step 5: Solve for x
    x = 22,714,492,638.79/218,928.72
  6. Step 6: Final answer
    x = 103,752.91

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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.