Home / 397,917.64-549,120.88-216,631.12

Finding the Fourth Proportional to 397,917.64, 549,120.88 and 216,631.12

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Solution

The fourth proportional to 397,917.64, 549,120.88 and 216,631.12 is: 298,947.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,917.64 : 549,120.88 = 216,631.12 : x
  2. Step 2: Convert to fraction form
    397,917.64/549,120.88 = 216,631.12/x
  3. Step 3: Cross multiply
    397,917.64x = 549,120.88 × 216,631.12
  4. Step 4: Simplify right side
    397,917.64x = 118,956,671,249.79
  5. Step 5: Solve for x
    x = 118,956,671,249.79/397,917.64
  6. Step 6: Final answer
    x = 298,947.97

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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.