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Finding the Fourth Proportional to 210,015,893.80, 314,929,362.30 and 80,580,485.80

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Solution

The fourth proportional to 210,015,893.80, 314,929,362.30 and 80,580,485.80 is: 120,834,478.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,015,893.80 : 314,929,362.30 = 80,580,485.80 : x
  2. Step 2: Convert to fraction form
    210,015,893.80/314,929,362.30 = 80,580,485.80/x
  3. Step 3: Cross multiply
    210,015,893.80x = 314,929,362.30 × 80,580,485.80
  4. Step 4: Simplify right side
    210,015,893.80x = 25,377,161,006,818,204
  5. Step 5: Solve for x
    x = 25,377,161,006,818,204/210,015,893.80
  6. Step 6: Final answer
    x = 120,834,478.51

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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.