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Finding the Fourth Proportional to 344,562.20, 515,822.70 and 256,207.40

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Solution

The fourth proportional to 344,562.20, 515,822.70 and 256,207.40 is: 383,552.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,562.20 : 515,822.70 = 256,207.40 : x
  2. Step 2: Convert to fraction form
    344,562.20/515,822.70 = 256,207.40/x
  3. Step 3: Cross multiply
    344,562.20x = 515,822.70 × 256,207.40
  4. Step 4: Simplify right side
    344,562.20x = 132,157,592,827.98
  5. Step 5: Solve for x
    x = 132,157,592,827.98/344,562.20
  6. Step 6: Final answer
    x = 383,552.21

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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.