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Finding the Fourth Proportional to 317,405.32, 476,110.77 and 80,748.25

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Solution

The fourth proportional to 317,405.32, 476,110.77 and 80,748.25 is: 121,123.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,405.32 : 476,110.77 = 80,748.25 : x
  2. Step 2: Convert to fraction form
    317,405.32/476,110.77 = 80,748.25/x
  3. Step 3: Cross multiply
    317,405.32x = 476,110.77 × 80,748.25
  4. Step 4: Simplify right side
    317,405.32x = 38,445,111,483.65
  5. Step 5: Solve for x
    x = 38,445,111,483.65/317,405.32
  6. Step 6: Final answer
    x = 121,123.08

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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.