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Finding the Fourth Proportional to 639,832.77, 959,010.99 and 240,218.67

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Solution

The fourth proportional to 639,832.77, 959,010.99 and 240,218.67 is: 360,050.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,832.77 : 959,010.99 = 240,218.67 : x
  2. Step 2: Convert to fraction form
    639,832.77/959,010.99 = 240,218.67/x
  3. Step 3: Cross multiply
    639,832.77x = 959,010.99 × 240,218.67
  4. Step 4: Simplify right side
    639,832.77x = 230,372,344,533.18
  5. Step 5: Solve for x
    x = 230,372,344,533.18/639,832.77
  6. Step 6: Final answer
    x = 360,050.87

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Double scale
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Similar ratio
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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.