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Finding the Fourth Proportional to 427,458.72, 589,910.40 and 236,468.88

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Solution

The fourth proportional to 427,458.72, 589,910.40 and 236,468.88 is: 326,336.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,458.72 : 589,910.40 = 236,468.88 : x
  2. Step 2: Convert to fraction form
    427,458.72/589,910.40 = 236,468.88/x
  3. Step 3: Cross multiply
    427,458.72x = 589,910.40 × 236,468.88
  4. Step 4: Simplify right side
    427,458.72x = 139,495,451,588.35
  5. Step 5: Solve for x
    x = 139,495,451,588.35/427,458.72
  6. Step 6: Final answer
    x = 326,336.66

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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.