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Finding the Fourth Proportional to 469,991.72, 648,598.68 and 266,042.90

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Solution

The fourth proportional to 469,991.72, 648,598.68 and 266,042.90 is: 367,144.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,991.72 : 648,598.68 = 266,042.90 : x
  2. Step 2: Convert to fraction form
    469,991.72/648,598.68 = 266,042.90/x
  3. Step 3: Cross multiply
    469,991.72x = 648,598.68 × 266,042.90
  4. Step 4: Simplify right side
    469,991.72x = 172,555,073,763.37
  5. Step 5: Solve for x
    x = 172,555,073,763.37/469,991.72
  6. Step 6: Final answer
    x = 367,144.92

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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.