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Finding the Fourth Proportional to 382,900.32, 528,393.76 and 239,739.36

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Solution

The fourth proportional to 382,900.32, 528,393.76 and 239,739.36 is: 330,834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,900.32 : 528,393.76 = 239,739.36 : x
  2. Step 2: Convert to fraction form
    382,900.32/528,393.76 = 239,739.36/x
  3. Step 3: Cross multiply
    382,900.32x = 528,393.76 × 239,739.36
  4. Step 4: Simplify right side
    382,900.32x = 126,676,781,850.39
  5. Step 5: Solve for x
    x = 126,676,781,850.39/382,900.32
  6. Step 6: Final answer
    x = 330,834.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.