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Finding the Fourth Proportional to 345,911.01, 518,800.90 and 146,370.75

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Solution

The fourth proportional to 345,911.01, 518,800.90 and 146,370.75 is: 219,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,911.01 : 518,800.90 = 146,370.75 : x
  2. Step 2: Convert to fraction form
    345,911.01/518,800.90 = 146,370.75/x
  3. Step 3: Cross multiply
    345,911.01x = 518,800.90 × 146,370.75
  4. Step 4: Simplify right side
    345,911.01x = 75,937,276,833.68
  5. Step 5: Solve for x
    x = 75,937,276,833.68/345,911.01
  6. Step 6: Final answer
    x = 219,528.36

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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.