Home / 398,447.37-549,841.33-217,155.41

Finding the Fourth Proportional to 398,447.37, 549,841.33 and 217,155.41

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Solution

The fourth proportional to 398,447.37, 549,841.33 and 217,155.41 is: 299,665.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,447.37 : 549,841.33 = 217,155.41 : x
  2. Step 2: Convert to fraction form
    398,447.37/549,841.33 = 217,155.41/x
  3. Step 3: Cross multiply
    398,447.37x = 549,841.33 × 217,155.41
  4. Step 4: Simplify right side
    398,447.37x = 119,401,022,128.10
  5. Step 5: Solve for x
    x = 119,401,022,128.10/398,447.37
  6. Step 6: Final answer
    x = 299,665.73

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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.