Home / 639,442.23-958,955.69-212,863.47

Finding the Fourth Proportional to 639,442.23, 958,955.69 and 212,863.47

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Solution

The fourth proportional to 639,442.23, 958,955.69 and 212,863.47 is: 319,226.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,442.23 : 958,955.69 = 212,863.47 : x
  2. Step 2: Convert to fraction form
    639,442.23/958,955.69 = 212,863.47/x
  3. Step 3: Cross multiply
    639,442.23x = 958,955.69 × 212,863.47
  4. Step 4: Simplify right side
    639,442.23x = 204,126,634,685.33
  5. Step 5: Solve for x
    x = 204,126,634,685.33/639,442.23
  6. Step 6: Final answer
    x = 319,226.08

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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.