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Finding the Fourth Proportional to 355,943.80, 533,915.70 and 187,233.40

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Solution

The fourth proportional to 355,943.80, 533,915.70 and 187,233.40 is: 280,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,943.80 : 533,915.70 = 187,233.40 : x
  2. Step 2: Convert to fraction form
    355,943.80/533,915.70 = 187,233.40/x
  3. Step 3: Cross multiply
    355,943.80x = 533,915.70 × 187,233.40
  4. Step 4: Simplify right side
    355,943.80x = 99,966,851,824.38
  5. Step 5: Solve for x
    x = 99,966,851,824.38/355,943.80
  6. Step 6: Final answer
    x = 280,850.10

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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.