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Finding the Fourth Proportional to 469,989.72, 648,595.92 and 266,040.90

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Solution

The fourth proportional to 469,989.72, 648,595.92 and 266,040.90 is: 367,142.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,989.72 : 648,595.92 = 266,040.90 : x
  2. Step 2: Convert to fraction form
    469,989.72/648,595.92 = 266,040.90/x
  3. Step 3: Cross multiply
    469,989.72x = 648,595.92 × 266,040.90
  4. Step 4: Simplify right side
    469,989.72x = 172,553,042,293.13
  5. Step 5: Solve for x
    x = 172,553,042,293.13/469,989.72
  6. Step 6: Final answer
    x = 367,142.16

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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.