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Finding the Fourth Proportional to 260,138.57, 390,207.96 and 73,150.07

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Solution

The fourth proportional to 260,138.57, 390,207.96 and 73,150.07 is: 109,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,138.57 : 390,207.96 = 73,150.07 : x
  2. Step 2: Convert to fraction form
    260,138.57/390,207.96 = 73,150.07/x
  3. Step 3: Cross multiply
    260,138.57x = 390,207.96 × 73,150.07
  4. Step 4: Simplify right side
    260,138.57x = 28,543,737,637.52
  5. Step 5: Solve for x
    x = 28,543,737,637.52/260,138.57
  6. Step 6: Final answer
    x = 109,725.13

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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.