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Finding the Fourth Proportional to 219,034.80, 328,552.20 and 189,510.30

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Solution

The fourth proportional to 219,034.80, 328,552.20 and 189,510.30 is: 284,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,034.80 : 328,552.20 = 189,510.30 : x
  2. Step 2: Convert to fraction form
    219,034.80/328,552.20 = 189,510.30/x
  3. Step 3: Cross multiply
    219,034.80x = 328,552.20 × 189,510.30
  4. Step 4: Simplify right side
    219,034.80x = 62,264,025,987.66
  5. Step 5: Solve for x
    x = 62,264,025,987.66/219,034.80
  6. Step 6: Final answer
    x = 284,265.45

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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.