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Finding the Fourth Proportional to 253,202.48, 349,405.28 and 138,458.38

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Solution

The fourth proportional to 253,202.48, 349,405.28 and 138,458.38 is: 191,064.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,202.48 : 349,405.28 = 138,458.38 : x
  2. Step 2: Convert to fraction form
    253,202.48/349,405.28 = 138,458.38/x
  3. Step 3: Cross multiply
    253,202.48x = 349,405.28 × 138,458.38
  4. Step 4: Simplify right side
    253,202.48x = 48,378,089,032.25
  5. Step 5: Solve for x
    x = 48,378,089,032.25/253,202.48
  6. Step 6: Final answer
    x = 191,064.83

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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.