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Finding the Fourth Proportional to 518,944.36, 716,142.90 and 280,480.36

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Solution

The fourth proportional to 518,944.36, 716,142.90 and 280,480.36 is: 387,062.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,944.36 : 716,142.90 = 280,480.36 : x
  2. Step 2: Convert to fraction form
    518,944.36/716,142.90 = 280,480.36/x
  3. Step 3: Cross multiply
    518,944.36x = 716,142.90 × 280,480.36
  4. Step 4: Simplify right side
    518,944.36x = 200,864,018,403.44
  5. Step 5: Solve for x
    x = 200,864,018,403.44/518,944.36
  6. Step 6: Final answer
    x = 387,062.73

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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.