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Finding the Fourth Proportional to 543,132.65, 813,387.69 and 272,409.39

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Solution

The fourth proportional to 543,132.65, 813,387.69 and 272,409.39 is: 407,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,132.65 : 813,387.69 = 272,409.39 : x
  2. Step 2: Convert to fraction form
    543,132.65/813,387.69 = 272,409.39/x
  3. Step 3: Cross multiply
    543,132.65x = 813,387.69 × 272,409.39
  4. Step 4: Simplify right side
    543,132.65x = 221,574,444,466.41
  5. Step 5: Solve for x
    x = 221,574,444,466.41/543,132.65
  6. Step 6: Final answer
    x = 407,956.41

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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.