Home / 305,137,220.16-421,086,393.36-165,907,981.92

Finding the Fourth Proportional to 305,137,220.16, 421,086,393.36 and 165,907,981.92

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Solution

The fourth proportional to 305,137,220.16, 421,086,393.36 and 165,907,981.92 is: 228,951,399.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,137,220.16 : 421,086,393.36 = 165,907,981.92 : x
  2. Step 2: Convert to fraction form
    305,137,220.16/421,086,393.36 = 165,907,981.92/x
  3. Step 3: Cross multiply
    305,137,220.16x = 421,086,393.36 × 165,907,981.92
  4. Step 4: Simplify right side
    305,137,220.16x = 69,861,593,736,328,888
  5. Step 5: Solve for x
    x = 69,861,593,736,328,888/305,137,220.16
  6. Step 6: Final answer
    x = 228,951,399.96

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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.