Home / 209,219.78-288,713.98-118,570.43

Finding the Fourth Proportional to 209,219.78, 288,713.98 and 118,570.43

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Solution

The fourth proportional to 209,219.78, 288,713.98 and 118,570.43 is: 163,621.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,219.78 : 288,713.98 = 118,570.43 : x
  2. Step 2: Convert to fraction form
    209,219.78/288,713.98 = 118,570.43/x
  3. Step 3: Cross multiply
    209,219.78x = 288,713.98 × 118,570.43
  4. Step 4: Simplify right side
    209,219.78x = 34,232,940,755.61
  5. Step 5: Solve for x
    x = 34,232,940,755.61/209,219.78
  6. Step 6: Final answer
    x = 163,621.91

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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.