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Finding the Fourth Proportional to 346,945.80, 520,073.10 and 159,630.60

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Solution

The fourth proportional to 346,945.80, 520,073.10 and 159,630.60 is: 239,286.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,945.80 : 520,073.10 = 159,630.60 : x
  2. Step 2: Convert to fraction form
    346,945.80/520,073.10 = 159,630.60/x
  3. Step 3: Cross multiply
    346,945.80x = 520,073.10 × 159,630.60
  4. Step 4: Simplify right side
    346,945.80x = 83,019,580,996.86
  5. Step 5: Solve for x
    x = 83,019,580,996.86/346,945.80
  6. Step 6: Final answer
    x = 239,286.89

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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.