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Finding the Fourth Proportional to 266,366.48, 399,549 and 219,430.64

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Solution

The fourth proportional to 266,366.48, 399,549 and 219,430.64 is: 329,145.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,366.48 : 399,549 = 219,430.64 : x
  2. Step 2: Convert to fraction form
    266,366.48/399,549 = 219,430.64/x
  3. Step 3: Cross multiply
    266,366.48x = 399,549 × 219,430.64
  4. Step 4: Simplify right side
    266,366.48x = 87,673,292,781.36
  5. Step 5: Solve for x
    x = 87,673,292,781.36/266,366.48
  6. Step 6: Final answer
    x = 329,145.37

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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.