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Finding the Fourth Proportional to 220,168,432.80, 330,252,649.20 and 66,814,243.20

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Solution

The fourth proportional to 220,168,432.80, 330,252,649.20 and 66,814,243.20 is: 100,221,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,168,432.80 : 330,252,649.20 = 66,814,243.20 : x
  2. Step 2: Convert to fraction form
    220,168,432.80/330,252,649.20 = 66,814,243.20/x
  3. Step 3: Cross multiply
    220,168,432.80x = 330,252,649.20 × 66,814,243.20
  4. Step 4: Simplify right side
    220,168,432.80x = 22,065,580,821,093,084
  5. Step 5: Solve for x
    x = 22,065,580,821,093,084/220,168,432.80
  6. Step 6: Final answer
    x = 100,221,364.80

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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.