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Finding the Fourth Proportional to 220,185,511.80, 330,278,267.70 and 90,726,484.20

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Solution

The fourth proportional to 220,185,511.80, 330,278,267.70 and 90,726,484.20 is: 136,089,726.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,185,511.80 : 330,278,267.70 = 90,726,484.20 : x
  2. Step 2: Convert to fraction form
    220,185,511.80/330,278,267.70 = 90,726,484.20/x
  3. Step 3: Cross multiply
    220,185,511.80x = 330,278,267.70 × 90,726,484.20
  4. Step 4: Simplify right side
    220,185,511.80x = 29,964,986,036,087,420
  5. Step 5: Solve for x
    x = 29,964,986,036,087,420/220,185,511.80
  6. Step 6: Final answer
    x = 136,089,726.30

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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.