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Finding the Fourth Proportional to 469,266.75, 648,122.72 and 318,101.31

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Solution

The fourth proportional to 469,266.75, 648,122.72 and 318,101.31 is: 439,342.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,266.75 : 648,122.72 = 318,101.31 : x
  2. Step 2: Convert to fraction form
    469,266.75/648,122.72 = 318,101.31/x
  3. Step 3: Cross multiply
    469,266.75x = 648,122.72 × 318,101.31
  4. Step 4: Simplify right side
    469,266.75x = 206,168,684,682.26
  5. Step 5: Solve for x
    x = 206,168,684,682.26/469,266.75
  6. Step 6: Final answer
    x = 439,342.20

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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.