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Finding the Fourth Proportional to 398,161.72, 549,458.49 and 216,873.07

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Solution

The fourth proportional to 398,161.72, 549,458.49 and 216,873.07 is: 299,282.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,161.72 : 549,458.49 = 216,873.07 : x
  2. Step 2: Convert to fraction form
    398,161.72/549,458.49 = 216,873.07/x
  3. Step 3: Cross multiply
    398,161.72x = 549,458.49 × 216,873.07
  4. Step 4: Simplify right side
    398,161.72x = 119,162,749,563.86
  5. Step 5: Solve for x
    x = 119,162,749,563.86/398,161.72
  6. Step 6: Final answer
    x = 299,282.29

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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.