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Finding the Fourth Proportional to 209,387.34, 289,005.85 and 118,796.33

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Solution

The fourth proportional to 209,387.34, 289,005.85 and 118,796.33 is: 163,968.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,387.34 : 289,005.85 = 118,796.33 : x
  2. Step 2: Convert to fraction form
    209,387.34/289,005.85 = 118,796.33/x
  3. Step 3: Cross multiply
    209,387.34x = 289,005.85 × 118,796.33
  4. Step 4: Simplify right side
    209,387.34x = 34,332,833,734.55
  5. Step 5: Solve for x
    x = 34,332,833,734.55/209,387.34
  6. Step 6: Final answer
    x = 163,968.05

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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.