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Finding the Fourth Proportional to 253,455.42, 349,779.51 and 140,278.14

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Solution

The fourth proportional to 253,455.42, 349,779.51 and 140,278.14 is: 193,589.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,455.42 : 349,779.51 = 140,278.14 : x
  2. Step 2: Convert to fraction form
    253,455.42/349,779.51 = 140,278.14/x
  3. Step 3: Cross multiply
    253,455.42x = 349,779.51 × 140,278.14
  4. Step 4: Simplify right side
    253,455.42x = 49,066,419,072.91
  5. Step 5: Solve for x
    x = 49,066,419,072.91/253,455.42
  6. Step 6: Final answer
    x = 193,589.94

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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.