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Finding the Fourth Proportional to 189,261.52, 283,301.80 and 139,397.92

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Solution

The fourth proportional to 189,261.52, 283,301.80 and 139,397.92 is: 208,661.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,261.52 : 283,301.80 = 139,397.92 : x
  2. Step 2: Convert to fraction form
    189,261.52/283,301.80 = 139,397.92/x
  3. Step 3: Cross multiply
    189,261.52x = 283,301.80 × 139,397.92
  4. Step 4: Simplify right side
    189,261.52x = 39,491,681,652.26
  5. Step 5: Solve for x
    x = 39,491,681,652.26/189,261.52
  6. Step 6: Final answer
    x = 208,661.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.