Home / 218,784.20-328,176.30-165,640.10

Finding the Fourth Proportional to 218,784.20, 328,176.30 and 165,640.10

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Solution

The fourth proportional to 218,784.20, 328,176.30 and 165,640.10 is: 248,460.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,784.20 : 328,176.30 = 165,640.10 : x
  2. Step 2: Convert to fraction form
    218,784.20/328,176.30 = 165,640.10/x
  3. Step 3: Cross multiply
    218,784.20x = 328,176.30 × 165,640.10
  4. Step 4: Simplify right side
    218,784.20x = 54,359,155,149.63
  5. Step 5: Solve for x
    x = 54,359,155,149.63/218,784.20
  6. Step 6: Final answer
    x = 248,460.15

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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.