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Finding the Fourth Proportional to 639,261.42, 958,641.54 and 239,684.36

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Solution

The fourth proportional to 639,261.42, 958,641.54 and 239,684.36 is: 359,432.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,261.42 : 958,641.54 = 239,684.36 : x
  2. Step 2: Convert to fraction form
    639,261.42/958,641.54 = 239,684.36/x
  3. Step 3: Cross multiply
    639,261.42x = 958,641.54 × 239,684.36
  4. Step 4: Simplify right side
    639,261.42x = 229,771,383,984.31
  5. Step 5: Solve for x
    x = 229,771,383,984.31/639,261.42
  6. Step 6: Final answer
    x = 359,432.58

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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.