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Finding the Fourth Proportional to 345,958.20, 518,527.70 and 146,278.20

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Solution

The fourth proportional to 345,958.20, 518,527.70 and 146,278.20 is: 219,244.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,958.20 : 518,527.70 = 146,278.20 : x
  2. Step 2: Convert to fraction form
    345,958.20/518,527.70 = 146,278.20/x
  3. Step 3: Cross multiply
    345,958.20x = 518,527.70 × 146,278.20
  4. Step 4: Simplify right side
    345,958.20x = 75,849,298,606.14
  5. Step 5: Solve for x
    x = 75,849,298,606.14/345,958.20
  6. Step 6: Final answer
    x = 219,244.11

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1.5x scale

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.