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Finding the Fourth Proportional to 319,114.68, 440,372.55 and 173,921.77

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Solution

The fourth proportional to 319,114.68, 440,372.55 and 173,921.77 is: 240,008.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,114.68 : 440,372.55 = 173,921.77 : x
  2. Step 2: Convert to fraction form
    319,114.68/440,372.55 = 173,921.77/x
  3. Step 3: Cross multiply
    319,114.68x = 440,372.55 × 173,921.77
  4. Step 4: Simplify right side
    319,114.68x = 76,590,373,355.41
  5. Step 5: Solve for x
    x = 76,590,373,355.41/319,114.68
  6. Step 6: Final answer
    x = 240,008.94

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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.