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Finding the Fourth Proportional to 543,361.25, 813,981.57 and 355,804.13

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Solution

The fourth proportional to 543,361.25, 813,981.57 and 355,804.13 is: 533,011.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,361.25 : 813,981.57 = 355,804.13 : x
  2. Step 2: Convert to fraction form
    543,361.25/813,981.57 = 355,804.13/x
  3. Step 3: Cross multiply
    543,361.25x = 813,981.57 × 355,804.13
  4. Step 4: Simplify right side
    543,361.25x = 289,618,000,279.98
  5. Step 5: Solve for x
    x = 289,618,000,279.98/543,361.25
  6. Step 6: Final answer
    x = 533,011.88

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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.