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Finding the Fourth Proportional to 421,703.92, 581,893.98 and 251,902

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Solution

The fourth proportional to 421,703.92, 581,893.98 and 251,902 is: 347,590.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,703.92 : 581,893.98 = 251,902 : x
  2. Step 2: Convert to fraction form
    421,703.92/581,893.98 = 251,902/x
  3. Step 3: Cross multiply
    421,703.92x = 581,893.98 × 251,902
  4. Step 4: Simplify right side
    421,703.92x = 146,580,257,349.96
  5. Step 5: Solve for x
    x = 146,580,257,349.96/421,703.92
  6. Step 6: Final answer
    x = 347,590.45

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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.