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Finding the Fourth Proportional to 253,618.62, 349,989.36 and 140,438.94

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Solution

The fourth proportional to 253,618.62, 349,989.36 and 140,438.94 is: 193,803.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,618.62 : 349,989.36 = 140,438.94 : x
  2. Step 2: Convert to fraction form
    253,618.62/349,989.36 = 140,438.94/x
  3. Step 3: Cross multiply
    253,618.62x = 349,989.36 × 140,438.94
  4. Step 4: Simplify right side
    253,618.62x = 49,152,134,729.68
  5. Step 5: Solve for x
    x = 49,152,134,729.68/253,618.62
  6. Step 6: Final answer
    x = 193,803.34

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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.