Home / 285,079,360.80-393,409,517.94-154,699,168.80

Finding the Fourth Proportional to 285,079,360.80, 393,409,517.94 and 154,699,168.80

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Solution

The fourth proportional to 285,079,360.80, 393,409,517.94 and 154,699,168.80 is: 213,484,852.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079,360.80 : 393,409,517.94 = 154,699,168.80 : x
  2. Step 2: Convert to fraction form
    285,079,360.80/393,409,517.94 = 154,699,168.80/x
  3. Step 3: Cross multiply
    285,079,360.80x = 393,409,517.94 × 154,699,168.80
  4. Step 4: Simplify right side
    285,079,360.80x = 60,860,125,423,326,696
  5. Step 5: Solve for x
    x = 60,860,125,423,326,696/285,079,360.80
  6. Step 6: Final answer
    x = 213,484,852.96

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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.