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Finding the Fourth Proportional to 639,557.62, 958,830.32 and 240,153.90

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Solution

The fourth proportional to 639,557.62, 958,830.32 and 240,153.90 is: 360,040.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,557.62 : 958,830.32 = 240,153.90 : x
  2. Step 2: Convert to fraction form
    639,557.62/958,830.32 = 240,153.90/x
  3. Step 3: Cross multiply
    639,557.62x = 958,830.32 × 240,153.90
  4. Step 4: Simplify right side
    639,557.62x = 230,266,840,786.25
  5. Step 5: Solve for x
    x = 230,266,840,786.25/639,557.62
  6. Step 6: Final answer
    x = 360,040.81

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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.