Home / 319,836.90-477,174.21-308,207.46

Finding the Fourth Proportional to 319,836.90, 477,174.21 and 308,207.46

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Solution

The fourth proportional to 319,836.90, 477,174.21 and 308,207.46 is: 459,823.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,836.90 : 477,174.21 = 308,207.46 : x
  2. Step 2: Convert to fraction form
    319,836.90/477,174.21 = 308,207.46/x
  3. Step 3: Cross multiply
    319,836.90x = 477,174.21 × 308,207.46
  4. Step 4: Simplify right side
    319,836.90x = 147,068,651,241.61
  5. Step 5: Solve for x
    x = 147,068,651,241.61/319,836.90
  6. Step 6: Final answer
    x = 459,823.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.