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Finding the Fourth Proportional to 398,236.86, 549,562.59 and 228,497.58

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Solution

The fourth proportional to 398,236.86, 549,562.59 and 228,497.58 is: 315,324.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,236.86 : 549,562.59 = 228,497.58 : x
  2. Step 2: Convert to fraction form
    398,236.86/549,562.59 = 228,497.58/x
  3. Step 3: Cross multiply
    398,236.86x = 549,562.59 × 228,497.58
  4. Step 4: Simplify right side
    398,236.86x = 125,573,721,873.53
  5. Step 5: Solve for x
    x = 125,573,721,873.53/398,236.86
  6. Step 6: Final answer
    x = 315,324.21

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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.