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Finding the Fourth Proportional to 421,440.83, 632,029.31 and 140,892.47

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Solution

The fourth proportional to 421,440.83, 632,029.31 and 140,892.47 is: 211,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,440.83 : 632,029.31 = 140,892.47 : x
  2. Step 2: Convert to fraction form
    421,440.83/632,029.31 = 140,892.47/x
  3. Step 3: Cross multiply
    421,440.83x = 632,029.31 × 140,892.47
  4. Step 4: Simplify right side
    421,440.83x = 89,048,169,893.83
  5. Step 5: Solve for x
    x = 89,048,169,893.83/421,440.83
  6. Step 6: Final answer
    x = 211,294.60

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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.