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Finding the Fourth Proportional to 289,963.77, 434,841.37 and 100,372.74

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Solution

The fourth proportional to 289,963.77, 434,841.37 and 100,372.74 is: 150,523.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,963.77 : 434,841.37 = 100,372.74 : x
  2. Step 2: Convert to fraction form
    289,963.77/434,841.37 = 100,372.74/x
  3. Step 3: Cross multiply
    289,963.77x = 434,841.37 × 100,372.74
  4. Step 4: Simplify right side
    289,963.77x = 43,646,219,521.32
  5. Step 5: Solve for x
    x = 43,646,219,521.32/289,963.77
  6. Step 6: Final answer
    x = 150,523.01

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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.