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Finding the Fourth Proportional to 318,397.82, 439,371.66 and 175,134.74

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Solution

The fourth proportional to 318,397.82, 439,371.66 and 175,134.74 is: 241,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,397.82 : 439,371.66 = 175,134.74 : x
  2. Step 2: Convert to fraction form
    318,397.82/439,371.66 = 175,134.74/x
  3. Step 3: Cross multiply
    318,397.82x = 439,371.66 × 175,134.74
  4. Step 4: Simplify right side
    318,397.82x = 76,949,241,437.47
  5. Step 5: Solve for x
    x = 76,949,241,437.47/318,397.82
  6. Step 6: Final answer
    x = 241,676.41

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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.