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Finding the Fourth Proportional to 469,911.85, 648,479.09 and 255,052

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Solution

The fourth proportional to 469,911.85, 648,479.09 and 255,052 is: 351,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,911.85 : 648,479.09 = 255,052 : x
  2. Step 2: Convert to fraction form
    469,911.85/648,479.09 = 255,052/x
  3. Step 3: Cross multiply
    469,911.85x = 648,479.09 × 255,052
  4. Step 4: Simplify right side
    469,911.85x = 165,395,888,862.68
  5. Step 5: Solve for x
    x = 165,395,888,862.68/469,911.85
  6. Step 6: Final answer
    x = 351,972.16

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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.