Home / 209,411.31-288,991.08-113,918.52

Finding the Fourth Proportional to 209,411.31, 288,991.08 and 113,918.52

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Solution

The fourth proportional to 209,411.31, 288,991.08 and 113,918.52 is: 157,209.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,411.31 : 288,991.08 = 113,918.52 : x
  2. Step 2: Convert to fraction form
    209,411.31/288,991.08 = 113,918.52/x
  3. Step 3: Cross multiply
    209,411.31x = 288,991.08 × 113,918.52
  4. Step 4: Simplify right side
    209,411.31x = 32,921,436,126.80
  5. Step 5: Solve for x
    x = 32,921,436,126.80/209,411.31
  6. Step 6: Final answer
    x = 157,209.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.