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Finding the Fourth Proportional to 440,661, 660,989.88 and 125,117.94

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Solution

The fourth proportional to 440,661, 660,989.88 and 125,117.94 is: 187,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,661 : 660,989.88 = 125,117.94 : x
  2. Step 2: Convert to fraction form
    440,661/660,989.88 = 125,117.94/x
  3. Step 3: Cross multiply
    440,661x = 660,989.88 × 125,117.94
  4. Step 4: Simplify right side
    440,661x = 82,701,692,146.45
  5. Step 5: Solve for x
    x = 82,701,692,146.45/440,661
  6. Step 6: Final answer
    x = 187,676.45

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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.