Home / 285,079,512.89-393,409,727.87-154,699,320.89

Finding the Fourth Proportional to 285,079,512.89, 393,409,727.87 and 154,699,320.89

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Solution

The fourth proportional to 285,079,512.89, 393,409,727.87 and 154,699,320.89 is: 213,485,062.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079,512.89 : 393,409,727.87 = 154,699,320.89 : x
  2. Step 2: Convert to fraction form
    285,079,512.89/393,409,727.87 = 154,699,320.89/x
  3. Step 3: Cross multiply
    285,079,512.89x = 393,409,727.87 × 154,699,320.89
  4. Step 4: Simplify right side
    285,079,512.89x = 60,860,217,730,268,160
  5. Step 5: Solve for x
    x = 60,860,217,730,268,160/285,079,512.89
  6. Step 6: Final answer
    x = 213,485,062.87

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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.