Home / 287,559.48-431,132.92-109,916.76

Finding the Fourth Proportional to 287,559.48, 431,132.92 and 109,916.76

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Solution

The fourth proportional to 287,559.48, 431,132.92 and 109,916.76 is: 164,796.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,559.48 : 431,132.92 = 109,916.76 : x
  2. Step 2: Convert to fraction form
    287,559.48/431,132.92 = 109,916.76/x
  3. Step 3: Cross multiply
    287,559.48x = 431,132.92 × 109,916.76
  4. Step 4: Simplify right side
    287,559.48x = 47,388,733,695.74
  5. Step 5: Solve for x
    x = 47,388,733,695.74/287,559.48
  6. Step 6: Final answer
    x = 164,796.28

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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.