Home / 429,147.41-643,721.40-148,664.66

Finding the Fourth Proportional to 429,147.41, 643,721.40 and 148,664.66

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Solution

The fourth proportional to 429,147.41, 643,721.40 and 148,664.66 is: 222,997.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,147.41 : 643,721.40 = 148,664.66 : x
  2. Step 2: Convert to fraction form
    429,147.41/643,721.40 = 148,664.66/x
  3. Step 3: Cross multiply
    429,147.41x = 643,721.40 × 148,664.66
  4. Step 4: Simplify right side
    429,147.41x = 95,698,619,847.12
  5. Step 5: Solve for x
    x = 95,698,619,847.12/429,147.41
  6. Step 6: Final answer
    x = 222,997.08

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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.