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Finding the Fourth Proportional to 486,017.50, 729,064.32 and 131,026.09

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Solution

The fourth proportional to 486,017.50, 729,064.32 and 131,026.09 is: 196,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,017.50 : 729,064.32 = 131,026.09 : x
  2. Step 2: Convert to fraction form
    486,017.50/729,064.32 = 131,026.09/x
  3. Step 3: Cross multiply
    486,017.50x = 729,064.32 × 131,026.09
  4. Step 4: Simplify right side
    486,017.50x = 95,526,447,208.11
  5. Step 5: Solve for x
    x = 95,526,447,208.11/486,017.50
  6. Step 6: Final answer
    x = 196,549.40

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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.