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Finding the Fourth Proportional to 469,866.63, 648,420.80 and 255,008.55

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Solution

The fourth proportional to 469,866.63, 648,420.80 and 255,008.55 is: 351,914.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,866.63 : 648,420.80 = 255,008.55 : x
  2. Step 2: Convert to fraction form
    469,866.63/648,420.80 = 255,008.55/x
  3. Step 3: Cross multiply
    469,866.63x = 648,420.80 × 255,008.55
  4. Step 4: Simplify right side
    469,866.63x = 165,352,846,722.80
  5. Step 5: Solve for x
    x = 165,352,846,722.80/469,866.63
  6. Step 6: Final answer
    x = 351,914.43

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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.