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Finding the Fourth Proportional to 253,153.89, 349,351.47 and 142,763.76

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Solution

The fourth proportional to 253,153.89, 349,351.47 and 142,763.76 is: 197,013.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,153.89 : 349,351.47 = 142,763.76 : x
  2. Step 2: Convert to fraction form
    253,153.89/349,351.47 = 142,763.76/x
  3. Step 3: Cross multiply
    253,153.89x = 349,351.47 × 142,763.76
  4. Step 4: Simplify right side
    253,153.89x = 49,874,729,418.73
  5. Step 5: Solve for x
    x = 49,874,729,418.73/253,153.89
  6. Step 6: Final answer
    x = 197,013.48

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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.