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Finding the Fourth Proportional to 639,235.68, 958,604.16 and 239,658.48

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Solution

The fourth proportional to 639,235.68, 958,604.16 and 239,658.48 is: 359,394.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,235.68 : 958,604.16 = 239,658.48 : x
  2. Step 2: Convert to fraction form
    639,235.68/958,604.16 = 239,658.48/x
  3. Step 3: Cross multiply
    639,235.68x = 958,604.16 × 239,658.48
  4. Step 4: Simplify right side
    639,235.68x = 229,737,615,907.28
  5. Step 5: Solve for x
    x = 229,737,615,907.28/639,235.68
  6. Step 6: Final answer
    x = 359,394.23

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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.