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Finding the Fourth Proportional to 317,840.04, 476,759.61 and 81,182.79

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Solution

The fourth proportional to 317,840.04, 476,759.61 and 81,182.79 is: 121,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,840.04 : 476,759.61 = 81,182.79 : x
  2. Step 2: Convert to fraction form
    317,840.04/476,759.61 = 81,182.79/x
  3. Step 3: Cross multiply
    317,840.04x = 476,759.61 × 81,182.79
  4. Step 4: Simplify right side
    317,840.04x = 38,704,675,299.11
  5. Step 5: Solve for x
    x = 38,704,675,299.11/317,840.04
  6. Step 6: Final answer
    x = 121,774.07

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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.