Home / 209,390.22-289,009.82-118,799.21

Finding the Fourth Proportional to 209,390.22, 289,009.82 and 118,799.21

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Solution

The fourth proportional to 209,390.22, 289,009.82 and 118,799.21 is: 163,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,390.22 : 289,009.82 = 118,799.21 : x
  2. Step 2: Convert to fraction form
    209,390.22/289,009.82 = 118,799.21/x
  3. Step 3: Cross multiply
    209,390.22x = 289,009.82 × 118,799.21
  4. Step 4: Simplify right side
    209,390.22x = 34,334,137,575.72
  5. Step 5: Solve for x
    x = 34,334,137,575.72/209,390.22
  6. Step 6: Final answer
    x = 163,972.02

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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.