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Finding the Fourth Proportional to 491,247.64, 736,871.40 and 136,261.68

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Solution

The fourth proportional to 491,247.64, 736,871.40 and 136,261.68 is: 204,392.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,247.64 : 736,871.40 = 136,261.68 : x
  2. Step 2: Convert to fraction form
    491,247.64/736,871.40 = 136,261.68/x
  3. Step 3: Cross multiply
    491,247.64x = 736,871.40 × 136,261.68
  4. Step 4: Simplify right side
    491,247.64x = 100,407,334,907.95
  5. Step 5: Solve for x
    x = 100,407,334,907.95/491,247.64
  6. Step 6: Final answer
    x = 204,392.50

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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.