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Finding the Fourth Proportional to 317,881.01, 476,820.29 and 81,223.31

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Solution

The fourth proportional to 317,881.01, 476,820.29 and 81,223.31 is: 121,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,881.01 : 476,820.29 = 81,223.31 : x
  2. Step 2: Convert to fraction form
    317,881.01/476,820.29 = 81,223.31/x
  3. Step 3: Cross multiply
    317,881.01x = 476,820.29 × 81,223.31
  4. Step 4: Simplify right side
    317,881.01x = 38,728,919,438.74
  5. Step 5: Solve for x
    x = 38,728,919,438.74/317,881.01
  6. Step 6: Final answer
    x = 121,834.65

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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.