Home / 317,819.90-476,729.40-81,162.74

Finding the Fourth Proportional to 317,819.90, 476,729.40 and 81,162.74

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Solution

The fourth proportional to 317,819.90, 476,729.40 and 81,162.74 is: 121,744.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,819.90 : 476,729.40 = 81,162.74 : x
  2. Step 2: Convert to fraction form
    317,819.90/476,729.40 = 81,162.74/x
  3. Step 3: Cross multiply
    317,819.90x = 476,729.40 × 81,162.74
  4. Step 4: Simplify right side
    317,819.90x = 38,692,664,342.56
  5. Step 5: Solve for x
    x = 38,692,664,342.56/317,819.90
  6. Step 6: Final answer
    x = 121,744.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.