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Finding the Fourth Proportional to 315,008.20, 471,856.20 and 262,520.20

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Solution

The fourth proportional to 315,008.20, 471,856.20 and 262,520.20 is: 393,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,008.20 : 471,856.20 = 262,520.20 : x
  2. Step 2: Convert to fraction form
    315,008.20/471,856.20 = 262,520.20/x
  3. Step 3: Cross multiply
    315,008.20x = 471,856.20 × 262,520.20
  4. Step 4: Simplify right side
    315,008.20x = 123,871,783,995.24
  5. Step 5: Solve for x
    x = 123,871,783,995.24/315,008.20
  6. Step 6: Final answer
    x = 393,233.52

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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.