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Finding the Fourth Proportional to 199,415.40, 299,035.53 and 74,668.92

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Solution

The fourth proportional to 199,415.40, 299,035.53 and 74,668.92 is: 111,970.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,415.40 : 299,035.53 = 74,668.92 : x
  2. Step 2: Convert to fraction form
    199,415.40/299,035.53 = 74,668.92/x
  3. Step 3: Cross multiply
    199,415.40x = 299,035.53 × 74,668.92
  4. Step 4: Simplify right side
    199,415.40x = 22,328,660,066.73
  5. Step 5: Solve for x
    x = 22,328,660,066.73/199,415.40
  6. Step 6: Final answer
    x = 111,970.59

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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.