Home / 382,839.20-528,504.72-239,678.72

Finding the Fourth Proportional to 382,839.20, 528,504.72 and 239,678.72

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Solution

The fourth proportional to 382,839.20, 528,504.72 and 239,678.72 is: 330,873.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,839.20 : 528,504.72 = 239,678.72 : x
  2. Step 2: Convert to fraction form
    382,839.20/528,504.72 = 239,678.72/x
  3. Step 3: Cross multiply
    382,839.20x = 528,504.72 × 239,678.72
  4. Step 4: Simplify right side
    382,839.20x = 126,671,334,803.56
  5. Step 5: Solve for x
    x = 126,671,334,803.56/382,839.20
  6. Step 6: Final answer
    x = 330,873.47

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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.