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Finding the Fourth Proportional to 407,367.80, 611,124.60 and 170,734.40

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Solution

The fourth proportional to 407,367.80, 611,124.60 and 170,734.40 is: 256,132.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,367.80 : 611,124.60 = 170,734.40 : x
  2. Step 2: Convert to fraction form
    407,367.80/611,124.60 = 170,734.40/x
  3. Step 3: Cross multiply
    407,367.80x = 611,124.60 × 170,734.40
  4. Step 4: Simplify right side
    407,367.80x = 104,339,991,906.24
  5. Step 5: Solve for x
    x = 104,339,991,906.24/407,367.80
  6. Step 6: Final answer
    x = 256,132.15

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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.