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Finding the Fourth Proportional to 318,397.84, 439,371.64 and 175,134.76

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Solution

The fourth proportional to 318,397.84, 439,371.64 and 175,134.76 is: 241,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,397.84 : 439,371.64 = 175,134.76 : x
  2. Step 2: Convert to fraction form
    318,397.84/439,371.64 = 175,134.76/x
  3. Step 3: Cross multiply
    318,397.84x = 439,371.64 × 175,134.76
  4. Step 4: Simplify right side
    318,397.84x = 76,949,246,722.21
  5. Step 5: Solve for x
    x = 76,949,246,722.21/318,397.84
  6. Step 6: Final answer
    x = 241,676.41

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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.