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Finding the Fourth Proportional to 291,256.08, 436,957.02 and 91,568.40

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Solution

The fourth proportional to 291,256.08, 436,957.02 and 91,568.40 is: 137,375.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,256.08 : 436,957.02 = 91,568.40 : x
  2. Step 2: Convert to fraction form
    291,256.08/436,957.02 = 91,568.40/x
  3. Step 3: Cross multiply
    291,256.08x = 436,957.02 × 91,568.40
  4. Step 4: Simplify right side
    291,256.08x = 40,011,455,190.17
  5. Step 5: Solve for x
    x = 40,011,455,190.17/291,256.08
  6. Step 6: Final answer
    x = 137,375.52

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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.