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Finding the Fourth Proportional to 288,125.60, 431,313.60 and 256,632.80

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Solution

The fourth proportional to 288,125.60, 431,313.60 and 256,632.80 is: 384,170.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,125.60 : 431,313.60 = 256,632.80 : x
  2. Step 2: Convert to fraction form
    288,125.60/431,313.60 = 256,632.80/x
  3. Step 3: Cross multiply
    288,125.60x = 431,313.60 × 256,632.80
  4. Step 4: Simplify right side
    288,125.60x = 110,689,216,846.08
  5. Step 5: Solve for x
    x = 110,689,216,846.08/288,125.60
  6. Step 6: Final answer
    x = 384,170.02

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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.