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Finding the Fourth Proportional to 415,360.70, 623,041.05 and 131,080.06

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Solution

The fourth proportional to 415,360.70, 623,041.05 and 131,080.06 is: 196,620.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,360.70 : 623,041.05 = 131,080.06 : x
  2. Step 2: Convert to fraction form
    415,360.70/623,041.05 = 131,080.06/x
  3. Step 3: Cross multiply
    415,360.70x = 623,041.05 × 131,080.06
  4. Step 4: Simplify right side
    415,360.70x = 81,668,258,216.46
  5. Step 5: Solve for x
    x = 81,668,258,216.46/415,360.70
  6. Step 6: Final answer
    x = 196,620.09

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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.