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Finding the Fourth Proportional to 230,666.20, 345,966.90 and 72,910.60

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Solution

The fourth proportional to 230,666.20, 345,966.90 and 72,910.60 is: 109,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,666.20 : 345,966.90 = 72,910.60 : x
  2. Step 2: Convert to fraction form
    230,666.20/345,966.90 = 72,910.60/x
  3. Step 3: Cross multiply
    230,666.20x = 345,966.90 × 72,910.60
  4. Step 4: Simplify right side
    230,666.20x = 25,224,654,259.14
  5. Step 5: Solve for x
    x = 25,224,654,259.14/230,666.20
  6. Step 6: Final answer
    x = 109,355.66

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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.