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Finding the Fourth Proportional to 551,503.11, 760,956.21 and 321,956.22

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Solution

The fourth proportional to 551,503.11, 760,956.21 and 321,956.22 is: 444,230.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,503.11 : 760,956.21 = 321,956.22 : x
  2. Step 2: Convert to fraction form
    551,503.11/760,956.21 = 321,956.22/x
  3. Step 3: Cross multiply
    551,503.11x = 760,956.21 × 321,956.22
  4. Step 4: Simplify right side
    551,503.11x = 244,994,584,957.13
  5. Step 5: Solve for x
    x = 244,994,584,957.13/551,503.11
  6. Step 6: Final answer
    x = 444,230.65

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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.