Home / 285,079,511.39-393,409,725.80-154,699,319.39

Finding the Fourth Proportional to 285,079,511.39, 393,409,725.80 and 154,699,319.39

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Solution

The fourth proportional to 285,079,511.39, 393,409,725.80 and 154,699,319.39 is: 213,485,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079,511.39 : 393,409,725.80 = 154,699,319.39 : x
  2. Step 2: Convert to fraction form
    285,079,511.39/393,409,725.80 = 154,699,319.39/x
  3. Step 3: Cross multiply
    285,079,511.39x = 393,409,725.80 × 154,699,319.39
  4. Step 4: Simplify right side
    285,079,511.39x = 60,860,216,819,925,976
  5. Step 5: Solve for x
    x = 60,860,216,819,925,976/285,079,511.39
  6. Step 6: Final answer
    x = 213,485,060.80

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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.