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Finding the Fourth Proportional to 309,895.02, 464,405.13 and 132,339.78

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Solution

The fourth proportional to 309,895.02, 464,405.13 and 132,339.78 is: 198,322.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,895.02 : 464,405.13 = 132,339.78 : x
  2. Step 2: Convert to fraction form
    309,895.02/464,405.13 = 132,339.78/x
  3. Step 3: Cross multiply
    309,895.02x = 464,405.13 × 132,339.78
  4. Step 4: Simplify right side
    309,895.02x = 61,459,272,735.07
  5. Step 5: Solve for x
    x = 61,459,272,735.07/309,895.02
  6. Step 6: Final answer
    x = 198,322.88

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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.