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Finding the Fourth Proportional to 203,131.74, 304,510.98 and 69,980.34

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Solution

The fourth proportional to 203,131.74, 304,510.98 and 69,980.34 is: 104,906.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,131.74 : 304,510.98 = 69,980.34 : x
  2. Step 2: Convert to fraction form
    203,131.74/304,510.98 = 69,980.34/x
  3. Step 3: Cross multiply
    203,131.74x = 304,510.98 × 69,980.34
  4. Step 4: Simplify right side
    203,131.74x = 21,309,781,914.13
  5. Step 5: Solve for x
    x = 21,309,781,914.13/203,131.74
  6. Step 6: Final answer
    x = 104,906.21

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1.5x scale

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.