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Finding the Fourth Proportional to 187,234.40, 280,851.60 and 68,909.60

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Solution

The fourth proportional to 187,234.40, 280,851.60 and 68,909.60 is: 103,364.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,234.40 : 280,851.60 = 68,909.60 : x
  2. Step 2: Convert to fraction form
    187,234.40/280,851.60 = 68,909.60/x
  3. Step 3: Cross multiply
    187,234.40x = 280,851.60 × 68,909.60
  4. Step 4: Simplify right side
    187,234.40x = 19,353,371,415.36
  5. Step 5: Solve for x
    x = 19,353,371,415.36/187,234.40
  6. Step 6: Final answer
    x = 103,364.40

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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.