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Finding the Fourth Proportional to 220,009.42, 330,014.13 and 77,958.91

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Solution

The fourth proportional to 220,009.42, 330,014.13 and 77,958.91 is: 116,938.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,009.42 : 330,014.13 = 77,958.91 : x
  2. Step 2: Convert to fraction form
    220,009.42/330,014.13 = 77,958.91/x
  3. Step 3: Cross multiply
    220,009.42x = 330,014.13 × 77,958.91
  4. Step 4: Simplify right side
    220,009.42x = 25,727,541,859.40
  5. Step 5: Solve for x
    x = 25,727,541,859.40/220,009.42
  6. Step 6: Final answer
    x = 116,938.37

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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.