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Finding the Fourth Proportional to 199,581.32, 299,419.84 and 66,462.80

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Solution

The fourth proportional to 199,581.32, 299,419.84 and 66,462.80 is: 99,710.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,581.32 : 299,419.84 = 66,462.80 : x
  2. Step 2: Convert to fraction form
    199,581.32/299,419.84 = 66,462.80/x
  3. Step 3: Cross multiply
    199,581.32x = 299,419.84 × 66,462.80
  4. Step 4: Simplify right side
    199,581.32x = 19,900,280,941.95
  5. Step 5: Solve for x
    x = 19,900,280,941.95/199,581.32
  6. Step 6: Final answer
    x = 99,710.14

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1.5x scale

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.