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Finding the Fourth Proportional to 260,100.27, 390,150.40 and 73,111.77

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Solution

The fourth proportional to 260,100.27, 390,150.40 and 73,111.77 is: 109,667.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,100.27 : 390,150.40 = 73,111.77 : x
  2. Step 2: Convert to fraction form
    260,100.27/390,150.40 = 73,111.77/x
  3. Step 3: Cross multiply
    260,100.27x = 390,150.40 × 73,111.77
  4. Step 4: Simplify right side
    260,100.27x = 28,524,584,359.46
  5. Step 5: Solve for x
    x = 28,524,584,359.46/260,100.27
  6. Step 6: Final answer
    x = 109,667.65

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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.