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Finding the Fourth Proportional to 469,912.60, 648,480 and 255,052.66

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Solution

The fourth proportional to 469,912.60, 648,480 and 255,052.66 is: 351,973.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,912.60 : 648,480 = 255,052.66 : x
  2. Step 2: Convert to fraction form
    469,912.60/648,480 = 255,052.66/x
  3. Step 3: Cross multiply
    469,912.60x = 648,480 × 255,052.66
  4. Step 4: Simplify right side
    469,912.60x = 165,396,548,956.80
  5. Step 5: Solve for x
    x = 165,396,548,956.80/469,912.60
  6. Step 6: Final answer
    x = 351,973.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.