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Finding the Fourth Proportional to 398,773.72, 550,168.77 and 255,612.70

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Solution

The fourth proportional to 398,773.72, 550,168.77 and 255,612.70 is: 352,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,773.72 : 550,168.77 = 255,612.70 : x
  2. Step 2: Convert to fraction form
    398,773.72/550,168.77 = 255,612.70/x
  3. Step 3: Cross multiply
    398,773.72x = 550,168.77 × 255,612.70
  4. Step 4: Simplify right side
    398,773.72x = 140,630,124,755.38
  5. Step 5: Solve for x
    x = 140,630,124,755.38/398,773.72
  6. Step 6: Final answer
    x = 352,656.45

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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.