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Finding the Fourth Proportional to 253,104.78, 349,273.53 and 145,678.26

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Solution

The fourth proportional to 253,104.78, 349,273.53 and 145,678.26 is: 201,029.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,104.78 : 349,273.53 = 145,678.26 : x
  2. Step 2: Convert to fraction form
    253,104.78/349,273.53 = 145,678.26/x
  3. Step 3: Cross multiply
    253,104.78x = 349,273.53 × 145,678.26
  4. Step 4: Simplify right side
    253,104.78x = 50,881,560,114.46
  5. Step 5: Solve for x
    x = 50,881,560,114.46/253,104.78
  6. Step 6: Final answer
    x = 201,029.63

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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.