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Finding the Fourth Proportional to 398,750.95, 549,965.28 and 255,524.32

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Solution

The fourth proportional to 398,750.95, 549,965.28 and 255,524.32 is: 352,424.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,750.95 : 549,965.28 = 255,524.32 : x
  2. Step 2: Convert to fraction form
    398,750.95/549,965.28 = 255,524.32/x
  3. Step 3: Cross multiply
    398,750.95x = 549,965.28 × 255,524.32
  4. Step 4: Simplify right side
    398,750.95x = 140,529,504,195.61
  5. Step 5: Solve for x
    x = 140,529,504,195.61/398,750.95
  6. Step 6: Final answer
    x = 352,424.25

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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.