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Finding the Fourth Proportional to 229,994.60, 317,392.20 and 129,392.60

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Solution

The fourth proportional to 229,994.60, 317,392.20 and 129,392.60 is: 178,561.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,994.60 : 317,392.20 = 129,392.60 : x
  2. Step 2: Convert to fraction form
    229,994.60/317,392.20 = 129,392.60/x
  3. Step 3: Cross multiply
    229,994.60x = 317,392.20 × 129,392.60
  4. Step 4: Simplify right side
    229,994.60x = 41,068,201,977.72
  5. Step 5: Solve for x
    x = 41,068,201,977.72/229,994.60
  6. Step 6: Final answer
    x = 178,561.59

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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.