Home / 317,977.20-476,965.80-81,338.40

Finding the Fourth Proportional to 317,977.20, 476,965.80 and 81,338.40

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Solution

The fourth proportional to 317,977.20, 476,965.80 and 81,338.40 is: 122,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,977.20 : 476,965.80 = 81,338.40 : x
  2. Step 2: Convert to fraction form
    317,977.20/476,965.80 = 81,338.40/x
  3. Step 3: Cross multiply
    317,977.20x = 476,965.80 × 81,338.40
  4. Step 4: Simplify right side
    317,977.20x = 38,795,635,026.72
  5. Step 5: Solve for x
    x = 38,795,635,026.72/317,977.20
  6. Step 6: Final answer
    x = 122,007.60

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1.5x scale

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.