Home / 287,788.40-431,436.41-110,422.70

Finding the Fourth Proportional to 287,788.40, 431,436.41 and 110,422.70

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Solution

The fourth proportional to 287,788.40, 431,436.41 and 110,422.70 is: 165,539.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,788.40 : 431,436.41 = 110,422.70 : x
  2. Step 2: Convert to fraction form
    287,788.40/431,436.41 = 110,422.70/x
  3. Step 3: Cross multiply
    287,788.40x = 431,436.41 × 110,422.70
  4. Step 4: Simplify right side
    287,788.40x = 47,640,370,561.21
  5. Step 5: Solve for x
    x = 47,640,370,561.21/287,788.40
  6. Step 6: Final answer
    x = 165,539.58

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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.