Home / 209,131.49-288,600.45-118,487.28

Finding the Fourth Proportional to 209,131.49, 288,600.45 and 118,487.28

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Solution

The fourth proportional to 209,131.49, 288,600.45 and 118,487.28 is: 163,511.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,131.49 : 288,600.45 = 118,487.28 : x
  2. Step 2: Convert to fraction form
    209,131.49/288,600.45 = 118,487.28/x
  3. Step 3: Cross multiply
    209,131.49x = 288,600.45 × 118,487.28
  4. Step 4: Simplify right side
    209,131.49x = 34,195,482,327.28
  5. Step 5: Solve for x
    x = 34,195,482,327.28/209,131.49
  6. Step 6: Final answer
    x = 163,511.88

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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.