Home / 318,983.31-440,195.65-173,788.70

Finding the Fourth Proportional to 318,983.31, 440,195.65 and 173,788.70

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Solution

The fourth proportional to 318,983.31, 440,195.65 and 173,788.70 is: 239,827.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,983.31 : 440,195.65 = 173,788.70 : x
  2. Step 2: Convert to fraction form
    318,983.31/440,195.65 = 173,788.70/x
  3. Step 3: Cross multiply
    318,983.31x = 440,195.65 × 173,788.70
  4. Step 4: Simplify right side
    318,983.31x = 76,501,027,123.71
  5. Step 5: Solve for x
    x = 76,501,027,123.71/318,983.31
  6. Step 6: Final answer
    x = 239,827.68

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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.