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Finding the Fourth Proportional to 318,796.48, 440,334.23 and 231,442.24

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Solution

The fourth proportional to 318,796.48, 440,334.23 and 231,442.24 is: 319,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,796.48 : 440,334.23 = 231,442.24 : x
  2. Step 2: Convert to fraction form
    318,796.48/440,334.23 = 231,442.24/x
  3. Step 3: Cross multiply
    318,796.48x = 440,334.23 × 231,442.24
  4. Step 4: Simplify right side
    318,796.48x = 101,911,937,869.02
  5. Step 5: Solve for x
    x = 101,911,937,869.02/318,796.48
  6. Step 6: Final answer
    x = 319,677.11

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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.