Home / 386,243,403.56-532,999,671.90-218,990,916.44

Finding the Fourth Proportional to 386,243,403.56, 532,999,671.90 and 218,990,916.44

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Solution

The fourth proportional to 386,243,403.56, 532,999,671.90 and 218,990,916.44 is: 302,198,265.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,243,403.56 : 532,999,671.90 = 218,990,916.44 : x
  2. Step 2: Convert to fraction form
    386,243,403.56/532,999,671.90 = 218,990,916.44/x
  3. Step 3: Cross multiply
    386,243,403.56x = 532,999,671.90 × 218,990,916.44
  4. Step 4: Simplify right side
    386,243,403.56x = 116,722,086,611,600,304
  5. Step 5: Solve for x
    x = 116,722,086,611,600,304/386,243,403.56
  6. Step 6: Final answer
    x = 302,198,265.49

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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.