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Finding the Fourth Proportional to 421,562.62, 632,376.87 and 122,047.66

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Solution

The fourth proportional to 421,562.62, 632,376.87 and 122,047.66 is: 183,081.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,562.62 : 632,376.87 = 122,047.66 : x
  2. Step 2: Convert to fraction form
    421,562.62/632,376.87 = 122,047.66/x
  3. Step 3: Cross multiply
    421,562.62x = 632,376.87 × 122,047.66
  4. Step 4: Simplify right side
    421,562.62x = 77,180,117,221.62
  5. Step 5: Solve for x
    x = 77,180,117,221.62/421,562.62
  6. Step 6: Final answer
    x = 183,081.03

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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.