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Finding the Fourth Proportional to 318,112.72, 438,995.40 and 174,882

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Solution

The fourth proportional to 318,112.72, 438,995.40 and 174,882 is: 241,337.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,112.72 : 438,995.40 = 174,882 : x
  2. Step 2: Convert to fraction form
    318,112.72/438,995.40 = 174,882/x
  3. Step 3: Cross multiply
    318,112.72x = 438,995.40 × 174,882
  4. Step 4: Simplify right side
    318,112.72x = 76,772,393,542.80
  5. Step 5: Solve for x
    x = 76,772,393,542.80/318,112.72
  6. Step 6: Final answer
    x = 241,337.08

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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.