Home / 309,719.66-427,372.20-173,748.39

Finding the Fourth Proportional to 309,719.66, 427,372.20 and 173,748.39

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Solution

The fourth proportional to 309,719.66, 427,372.20 and 173,748.39 is: 239,749.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,719.66 : 427,372.20 = 173,748.39 : x
  2. Step 2: Convert to fraction form
    309,719.66/427,372.20 = 173,748.39/x
  3. Step 3: Cross multiply
    309,719.66x = 427,372.20 × 173,748.39
  4. Step 4: Simplify right side
    309,719.66x = 74,255,231,680.76
  5. Step 5: Solve for x
    x = 74,255,231,680.76/309,719.66
  6. Step 6: Final answer
    x = 239,749.82

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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.