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Finding the Fourth Proportional to 388,555.46, 536,001.30 and 267,486.56

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Solution

The fourth proportional to 388,555.46, 536,001.30 and 267,486.56 is: 368,990.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,555.46 : 536,001.30 = 267,486.56 : x
  2. Step 2: Convert to fraction form
    388,555.46/536,001.30 = 267,486.56/x
  3. Step 3: Cross multiply
    388,555.46x = 536,001.30 × 267,486.56
  4. Step 4: Simplify right side
    388,555.46x = 143,373,143,892.53
  5. Step 5: Solve for x
    x = 143,373,143,892.53/388,555.46
  6. Step 6: Final answer
    x = 368,990.17

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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.