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Finding the Fourth Proportional to 201,657.90, 302,486.85 and 154,418.70

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Solution

The fourth proportional to 201,657.90, 302,486.85 and 154,418.70 is: 231,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,657.90 : 302,486.85 = 154,418.70 : x
  2. Step 2: Convert to fraction form
    201,657.90/302,486.85 = 154,418.70/x
  3. Step 3: Cross multiply
    201,657.90x = 302,486.85 × 154,418.70
  4. Step 4: Simplify right side
    201,657.90x = 46,709,626,144.10
  5. Step 5: Solve for x
    x = 46,709,626,144.10/201,657.90
  6. Step 6: Final answer
    x = 231,628.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.