Home / 221,170,279.50-305,215,117.02-123,385,135.50

Finding the Fourth Proportional to 221,170,279.50, 305,215,117.02 and 123,385,135.50

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Solution

The fourth proportional to 221,170,279.50, 305,215,117.02 and 123,385,135.50 is: 170,271,560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,170,279.50 : 305,215,117.02 = 123,385,135.50 : x
  2. Step 2: Convert to fraction form
    221,170,279.50/305,215,117.02 = 123,385,135.50/x
  3. Step 3: Cross multiply
    221,170,279.50x = 305,215,117.02 × 123,385,135.50
  4. Step 4: Simplify right side
    221,170,279.50x = 37,659,008,570,161,056
  5. Step 5: Solve for x
    x = 37,659,008,570,161,056/221,170,279.50
  6. Step 6: Final answer
    x = 170,271,560.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.