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Finding the Fourth Proportional to 219,182.40, 328,082.40 and 172,180.80

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Solution

The fourth proportional to 219,182.40, 328,082.40 and 172,180.80 is: 257,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,182.40 : 328,082.40 = 172,180.80 : x
  2. Step 2: Convert to fraction form
    219,182.40/328,082.40 = 172,180.80/x
  3. Step 3: Cross multiply
    219,182.40x = 328,082.40 × 172,180.80
  4. Step 4: Simplify right side
    219,182.40x = 56,489,490,097.92
  5. Step 5: Solve for x
    x = 56,489,490,097.92/219,182.40
  6. Step 6: Final answer
    x = 257,728.22

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1.5x scale

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.