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Finding the Fourth Proportional to 658,638.75, 987,960.56 and 160,002.75

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Solution

The fourth proportional to 658,638.75, 987,960.56 and 160,002.75 is: 240,004.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,638.75 : 987,960.56 = 160,002.75 : x
  2. Step 2: Convert to fraction form
    658,638.75/987,960.56 = 160,002.75/x
  3. Step 3: Cross multiply
    658,638.75x = 987,960.56 × 160,002.75
  4. Step 4: Simplify right side
    658,638.75x = 158,076,406,491.54
  5. Step 5: Solve for x
    x = 158,076,406,491.54/658,638.75
  6. Step 6: Final answer
    x = 240,004.72

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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.