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Finding the Fourth Proportional to 171,907.10, 257,131.65 and 154,265.30

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Solution

The fourth proportional to 171,907.10, 257,131.65 and 154,265.30 is: 230,743.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,907.10 : 257,131.65 = 154,265.30 : x
  2. Step 2: Convert to fraction form
    171,907.10/257,131.65 = 154,265.30/x
  3. Step 3: Cross multiply
    171,907.10x = 257,131.65 × 154,265.30
  4. Step 4: Simplify right side
    171,907.10x = 39,666,491,126.75
  5. Step 5: Solve for x
    x = 39,666,491,126.75/171,907.10
  6. Step 6: Final answer
    x = 230,743.76

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1.5x scale

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.