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Finding the Fourth Proportional to 398,046.35, 549,298.55 and 225,962.82

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Solution

The fourth proportional to 398,046.35, 549,298.55 and 225,962.82 is: 311,825.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,046.35 : 549,298.55 = 225,962.82 : x
  2. Step 2: Convert to fraction form
    398,046.35/549,298.55 = 225,962.82/x
  3. Step 3: Cross multiply
    398,046.35x = 549,298.55 × 225,962.82
  4. Step 4: Simplify right side
    398,046.35x = 124,121,049,944.82
  5. Step 5: Solve for x
    x = 124,121,049,944.82/398,046.35
  6. Step 6: Final answer
    x = 311,825.62

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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.