Home / 215,929.72-298,348.50-155,380.60

Finding the Fourth Proportional to 215,929.72, 298,348.50 and 155,380.60

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Solution

The fourth proportional to 215,929.72, 298,348.50 and 155,380.60 is: 214,688.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,929.72 : 298,348.50 = 155,380.60 : x
  2. Step 2: Convert to fraction form
    215,929.72/298,348.50 = 155,380.60/x
  3. Step 3: Cross multiply
    215,929.72x = 298,348.50 × 155,380.60
  4. Step 4: Simplify right side
    215,929.72x = 46,357,568,939.10
  5. Step 5: Solve for x
    x = 46,357,568,939.10/215,929.72
  6. Step 6: Final answer
    x = 214,688.23

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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.