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Finding the Fourth Proportional to 234,987.42, 324,288.12 and 139,494.48

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Solution

The fourth proportional to 234,987.42, 324,288.12 and 139,494.48 is: 192,505.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,987.42 : 324,288.12 = 139,494.48 : x
  2. Step 2: Convert to fraction form
    234,987.42/324,288.12 = 139,494.48/x
  3. Step 3: Cross multiply
    234,987.42x = 324,288.12 × 139,494.48
  4. Step 4: Simplify right side
    234,987.42x = 45,236,402,669.58
  5. Step 5: Solve for x
    x = 45,236,402,669.58/234,987.42
  6. Step 6: Final answer
    x = 192,505.64

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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.