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Finding the Fourth Proportional to 639,606.88, 959,235.18 and 240,216.76

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Solution

The fourth proportional to 639,606.88, 959,235.18 and 240,216.76 is: 360,259.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,606.88 : 959,235.18 = 240,216.76 : x
  2. Step 2: Convert to fraction form
    639,606.88/959,235.18 = 240,216.76/x
  3. Step 3: Cross multiply
    639,606.88x = 959,235.18 × 240,216.76
  4. Step 4: Simplify right side
    639,606.88x = 230,424,367,017.62
  5. Step 5: Solve for x
    x = 230,424,367,017.62/639,606.88
  6. Step 6: Final answer
    x = 360,259.36

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Double scale
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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.