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Finding the Fourth Proportional to 230,011.20, 317,401.20 and 134,512.20

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Solution

The fourth proportional to 230,011.20, 317,401.20 and 134,512.20 is: 185,618.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,011.20 : 317,401.20 = 134,512.20 : x
  2. Step 2: Convert to fraction form
    230,011.20/317,401.20 = 134,512.20/x
  3. Step 3: Cross multiply
    230,011.20x = 317,401.20 × 134,512.20
  4. Step 4: Simplify right side
    230,011.20x = 42,694,333,694.64
  5. Step 5: Solve for x
    x = 42,694,333,694.64/230,011.20
  6. Step 6: Final answer
    x = 185,618.50

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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.