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Finding the Fourth Proportional to 317,551.97, 438,205.40 and 188,495.89

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Solution

The fourth proportional to 317,551.97, 438,205.40 and 188,495.89 is: 260,114.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,551.97 : 438,205.40 = 188,495.89 : x
  2. Step 2: Convert to fraction form
    317,551.97/438,205.40 = 188,495.89/x
  3. Step 3: Cross multiply
    317,551.97x = 438,205.40 × 188,495.89
  4. Step 4: Simplify right side
    317,551.97x = 82,599,914,684.78
  5. Step 5: Solve for x
    x = 82,599,914,684.78/317,551.97
  6. Step 6: Final answer
    x = 260,114.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.