Home / 398,234,998.99-549,562,335.55-231,005,081.71

Finding the Fourth Proportional to 398,234,998.99, 549,562,335.55 and 231,005,081.71

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Solution

The fourth proportional to 398,234,998.99, 549,562,335.55 and 231,005,081.71 is: 318,785,874.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,234,998.99 : 549,562,335.55 = 231,005,081.71 : x
  2. Step 2: Convert to fraction form
    398,234,998.99/549,562,335.55 = 231,005,081.71/x
  3. Step 3: Cross multiply
    398,234,998.99x = 549,562,335.55 × 231,005,081.71
  4. Step 4: Simplify right side
    398,234,998.99x = 126,951,692,228,466,176
  5. Step 5: Solve for x
    x = 126,951,692,228,466,176/398,234,998.99
  6. Step 6: Final answer
    x = 318,785,874.05

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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.