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Finding the Fourth Proportional to 551,867.17, 761,639.85 and 306,876.39

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Solution

The fourth proportional to 551,867.17, 761,639.85 and 306,876.39 is: 423,524.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,867.17 : 761,639.85 = 306,876.39 : x
  2. Step 2: Convert to fraction form
    551,867.17/761,639.85 = 306,876.39/x
  3. Step 3: Cross multiply
    551,867.17x = 761,639.85 × 306,876.39
  4. Step 4: Simplify right side
    551,867.17x = 233,729,286,113.76
  5. Step 5: Solve for x
    x = 233,729,286,113.76/551,867.17
  6. Step 6: Final answer
    x = 423,524.53

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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.