Home / 429,054.26-643,677.07-140,878.73

Finding the Fourth Proportional to 429,054.26, 643,677.07 and 140,878.73

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Solution

The fourth proportional to 429,054.26, 643,677.07 and 140,878.73 is: 211,349.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,054.26 : 643,677.07 = 140,878.73 : x
  2. Step 2: Convert to fraction form
    429,054.26/643,677.07 = 140,878.73/x
  3. Step 3: Cross multiply
    429,054.26x = 643,677.07 × 140,878.73
  4. Step 4: Simplify right side
    429,054.26x = 90,680,409,408.72
  5. Step 5: Solve for x
    x = 90,680,409,408.72/429,054.26
  6. Step 6: Final answer
    x = 211,349.52

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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.