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Finding the Fourth Proportional to 426,241, 639,373.02 and 130,753

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Solution

The fourth proportional to 426,241, 639,373.02 and 130,753 is: 196,133.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,241 : 639,373.02 = 130,753 : x
  2. Step 2: Convert to fraction form
    426,241/639,373.02 = 130,753/x
  3. Step 3: Cross multiply
    426,241x = 639,373.02 × 130,753
  4. Step 4: Simplify right side
    426,241x = 83,599,940,484.06
  5. Step 5: Solve for x
    x = 83,599,940,484.06/426,241
  6. Step 6: Final answer
    x = 196,133.03

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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.