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Finding the Fourth Proportional to 221,978,515.20, 332,967,772.80 and 107,187,259.20

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Solution

The fourth proportional to 221,978,515.20, 332,967,772.80 and 107,187,259.20 is: 160,780,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,978,515.20 : 332,967,772.80 = 107,187,259.20 : x
  2. Step 2: Convert to fraction form
    221,978,515.20/332,967,772.80 = 107,187,259.20/x
  3. Step 3: Cross multiply
    221,978,515.20x = 332,967,772.80 × 107,187,259.20
  4. Step 4: Simplify right side
    221,978,515.20x = 35,689,902,968,360,312
  5. Step 5: Solve for x
    x = 35,689,902,968,360,312/221,978,515.20
  6. Step 6: Final answer
    x = 160,780,888.80

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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.