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Finding the Fourth Proportional to 426,808.17, 640,300.65 and 174,089.37

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Solution

The fourth proportional to 426,808.17, 640,300.65 and 174,089.37 is: 261,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,808.17 : 640,300.65 = 174,089.37 : x
  2. Step 2: Convert to fraction form
    426,808.17/640,300.65 = 174,089.37/x
  3. Step 3: Cross multiply
    426,808.17x = 640,300.65 × 174,089.37
  4. Step 4: Simplify right side
    426,808.17x = 111,469,536,769.09
  5. Step 5: Solve for x
    x = 111,469,536,769.09/426,808.17
  6. Step 6: Final answer
    x = 261,170.11

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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.