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Finding the Fourth Proportional to 199,492.68, 299,287.80 and 66,372.60

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Solution

The fourth proportional to 199,492.68, 299,287.80 and 66,372.60 is: 99,575.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,492.68 : 299,287.80 = 66,372.60 : x
  2. Step 2: Convert to fraction form
    199,492.68/299,287.80 = 66,372.60/x
  3. Step 3: Cross multiply
    199,492.68x = 299,287.80 × 66,372.60
  4. Step 4: Simplify right side
    199,492.68x = 19,864,509,434.28
  5. Step 5: Solve for x
    x = 19,864,509,434.28/199,492.68
  6. Step 6: Final answer
    x = 99,575.13

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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.