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Finding the Fourth Proportional to 209,390.97, 289,010.86 and 118,799.96

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Solution

The fourth proportional to 209,390.97, 289,010.86 and 118,799.96 is: 163,973.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,390.97 : 289,010.86 = 118,799.96 : x
  2. Step 2: Convert to fraction form
    209,390.97/289,010.86 = 118,799.96/x
  3. Step 3: Cross multiply
    209,390.97x = 289,010.86 × 118,799.96
  4. Step 4: Simplify right side
    209,390.97x = 34,334,478,013.57
  5. Step 5: Solve for x
    x = 34,334,478,013.57/209,390.97
  6. Step 6: Final answer
    x = 163,973.06

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1.5x scale

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.