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Finding the Fourth Proportional to 317,398.22, 476,218.88 and 191,128.70

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Solution

The fourth proportional to 317,398.22, 476,218.88 and 191,128.70 is: 286,766.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,398.22 : 476,218.88 = 191,128.70 : x
  2. Step 2: Convert to fraction form
    317,398.22/476,218.88 = 191,128.70/x
  3. Step 3: Cross multiply
    317,398.22x = 476,218.88 × 191,128.70
  4. Step 4: Simplify right side
    317,398.22x = 91,019,092,113.12
  5. Step 5: Solve for x
    x = 91,019,092,113.12/317,398.22
  6. Step 6: Final answer
    x = 286,766.24

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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.