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Finding the Fourth Proportional to 543,528.20, 750,138.12 and 328,669.80

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Solution

The fourth proportional to 543,528.20, 750,138.12 and 328,669.80 is: 453,606.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,528.20 : 750,138.12 = 328,669.80 : x
  2. Step 2: Convert to fraction form
    543,528.20/750,138.12 = 328,669.80/x
  3. Step 3: Cross multiply
    543,528.20x = 750,138.12 × 328,669.80
  4. Step 4: Simplify right side
    543,528.20x = 246,547,745,872.78
  5. Step 5: Solve for x
    x = 246,547,745,872.78/543,528.20
  6. Step 6: Final answer
    x = 453,606.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.