Home / 210,545,914.70-315,839,976.60-72,353,321.30

Finding the Fourth Proportional to 210,545,914.70, 315,839,976.60 and 72,353,321.30

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Solution

The fourth proportional to 210,545,914.70, 315,839,976.60 and 72,353,321.30 is: 108,537,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,545,914.70 : 315,839,976.60 = 72,353,321.30 : x
  2. Step 2: Convert to fraction form
    210,545,914.70/315,839,976.60 = 72,353,321.30/x
  3. Step 3: Cross multiply
    210,545,914.70x = 315,839,976.60 × 72,353,321.30
  4. Step 4: Simplify right side
    210,545,914.70x = 22,852,071,306,324,284
  5. Step 5: Solve for x
    x = 22,852,071,306,324,284/210,545,914.70
  6. Step 6: Final answer
    x = 108,537,234.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.