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Finding the Fourth Proportional to 209,490.67, 289,103.67 and 118,850.46

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Solution

The fourth proportional to 209,490.67, 289,103.67 and 118,850.46 is: 164,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,490.67 : 289,103.67 = 118,850.46 : x
  2. Step 2: Convert to fraction form
    209,490.67/289,103.67 = 118,850.46/x
  3. Step 3: Cross multiply
    209,490.67x = 289,103.67 × 118,850.46
  4. Step 4: Simplify right side
    209,490.67x = 34,360,104,167.19
  5. Step 5: Solve for x
    x = 34,360,104,167.19/209,490.67
  6. Step 6: Final answer
    x = 164,017.35

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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.