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Finding the Fourth Proportional to 253,602.36, 349,971.48 and 140,422.68

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Solution

The fourth proportional to 253,602.36, 349,971.48 and 140,422.68 is: 193,783.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,602.36 : 349,971.48 = 140,422.68 : x
  2. Step 2: Convert to fraction form
    253,602.36/349,971.48 = 140,422.68/x
  3. Step 3: Cross multiply
    253,602.36x = 349,971.48 × 140,422.68
  4. Step 4: Simplify right side
    253,602.36x = 49,143,933,145.17
  5. Step 5: Solve for x
    x = 49,143,933,145.17/253,602.36
  6. Step 6: Final answer
    x = 193,783.42

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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.