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Finding the Fourth Proportional to 426,770.13, 640,152.75 and 174,049.32

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Solution

The fourth proportional to 426,770.13, 640,152.75 and 174,049.32 is: 261,072.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,770.13 : 640,152.75 = 174,049.32 : x
  2. Step 2: Convert to fraction form
    426,770.13/640,152.75 = 174,049.32/x
  3. Step 3: Cross multiply
    426,770.13x = 640,152.75 × 174,049.32
  4. Step 4: Simplify right side
    426,770.13x = 111,418,150,833.63
  5. Step 5: Solve for x
    x = 111,418,150,833.63/426,770.13
  6. Step 6: Final answer
    x = 261,072.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.