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Finding the Fourth Proportional to 345,682.35, 518,683.90 and 146,049.34

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Solution

The fourth proportional to 345,682.35, 518,683.90 and 146,049.34 is: 219,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,682.35 : 518,683.90 = 146,049.34 : x
  2. Step 2: Convert to fraction form
    345,682.35/518,683.90 = 146,049.34/x
  3. Step 3: Cross multiply
    345,682.35x = 518,683.90 × 146,049.34
  4. Step 4: Simplify right side
    345,682.35x = 75,753,441,263.63
  5. Step 5: Solve for x
    x = 75,753,441,263.63/345,682.35
  6. Step 6: Final answer
    x = 219,141.77

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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.