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Finding the Fourth Proportional to 551,503.32, 760,956.51 and 321,956.43

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Solution

The fourth proportional to 551,503.32, 760,956.51 and 321,956.43 is: 444,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,503.32 : 760,956.51 = 321,956.43 : x
  2. Step 2: Convert to fraction form
    551,503.32/760,956.51 = 321,956.43/x
  3. Step 3: Cross multiply
    551,503.32x = 760,956.51 × 321,956.43
  4. Step 4: Simplify right side
    551,503.32x = 244,994,841,344.86
  5. Step 5: Solve for x
    x = 244,994,841,344.86/551,503.32
  6. Step 6: Final answer
    x = 444,230.95

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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.