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Finding the Fourth Proportional to 398,247.90, 549,657.27 and 228,592.86

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Solution

The fourth proportional to 398,247.90, 549,657.27 and 228,592.86 is: 315,501.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,247.90 : 549,657.27 = 228,592.86 : x
  2. Step 2: Convert to fraction form
    398,247.90/549,657.27 = 228,592.86/x
  3. Step 3: Cross multiply
    398,247.90x = 549,657.27 × 228,592.86
  4. Step 4: Simplify right side
    398,247.90x = 125,647,727,369.09
  5. Step 5: Solve for x
    x = 125,647,727,369.09/398,247.90
  6. Step 6: Final answer
    x = 315,501.29

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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.