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Finding the Fourth Proportional to 561,355.32, 842,242.50 and 336,876.78

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Solution

The fourth proportional to 561,355.32, 842,242.50 and 336,876.78 is: 505,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,355.32 : 842,242.50 = 336,876.78 : x
  2. Step 2: Convert to fraction form
    561,355.32/842,242.50 = 336,876.78/x
  3. Step 3: Cross multiply
    561,355.32x = 842,242.50 × 336,876.78
  4. Step 4: Simplify right side
    561,355.32x = 283,731,941,379.15
  5. Step 5: Solve for x
    x = 283,731,941,379.15/561,355.32
  6. Step 6: Final answer
    x = 505,440.91

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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.