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Finding the Fourth Proportional to 421,543.59, 632,348.37 and 122,028.66

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Solution

The fourth proportional to 421,543.59, 632,348.37 and 122,028.66 is: 183,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,543.59 : 632,348.37 = 122,028.66 : x
  2. Step 2: Convert to fraction form
    421,543.59/632,348.37 = 122,028.66/x
  3. Step 3: Cross multiply
    421,543.59x = 632,348.37 × 122,028.66
  4. Step 4: Simplify right side
    421,543.59x = 77,164,624,244.28
  5. Step 5: Solve for x
    x = 77,164,624,244.28/421,543.59
  6. Step 6: Final answer
    x = 183,052.54

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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.