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Finding the Fourth Proportional to 469,919.98, 648,472.19 and 255,055.46

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Solution

The fourth proportional to 469,919.98, 648,472.19 and 255,055.46 is: 351,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,919.98 : 648,472.19 = 255,055.46 : x
  2. Step 2: Convert to fraction form
    469,919.98/648,472.19 = 255,055.46/x
  3. Step 3: Cross multiply
    469,919.98x = 648,472.19 × 255,055.46
  4. Step 4: Simplify right side
    469,919.98x = 165,396,372,717.66
  5. Step 5: Solve for x
    x = 165,396,372,717.66/469,919.98
  6. Step 6: Final answer
    x = 351,967.10

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1.5x scale

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.