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Finding the Fourth Proportional to 291,488.76, 437,248.78 and 91,824.77

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Solution

The fourth proportional to 291,488.76, 437,248.78 and 91,824.77 is: 137,742.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,488.76 : 437,248.78 = 91,824.77 : x
  2. Step 2: Convert to fraction form
    291,488.76/437,248.78 = 91,824.77/x
  3. Step 3: Cross multiply
    291,488.76x = 437,248.78 × 91,824.77
  4. Step 4: Simplify right side
    291,488.76x = 40,150,269,519.84
  5. Step 5: Solve for x
    x = 40,150,269,519.84/291,488.76
  6. Step 6: Final answer
    x = 137,742.08

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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.