Home / 287,559.22-431,132.55-109,916.50

Finding the Fourth Proportional to 287,559.22, 431,132.55 and 109,916.50

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Solution

The fourth proportional to 287,559.22, 431,132.55 and 109,916.50 is: 164,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,559.22 : 431,132.55 = 109,916.50 : x
  2. Step 2: Convert to fraction form
    287,559.22/431,132.55 = 109,916.50/x
  3. Step 3: Cross multiply
    287,559.22x = 431,132.55 × 109,916.50
  4. Step 4: Simplify right side
    287,559.22x = 47,388,580,932.08
  5. Step 5: Solve for x
    x = 47,388,580,932.08/287,559.22
  6. Step 6: Final answer
    x = 164,795.90

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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.