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Finding the Fourth Proportional to 207,020.37, 310,530.21 and 64,876.59

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Solution

The fourth proportional to 207,020.37, 310,530.21 and 64,876.59 is: 97,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,020.37 : 310,530.21 = 64,876.59 : x
  2. Step 2: Convert to fraction form
    207,020.37/310,530.21 = 64,876.59/x
  3. Step 3: Cross multiply
    207,020.37x = 310,530.21 × 64,876.59
  4. Step 4: Simplify right side
    207,020.37x = 20,146,141,116.78
  5. Step 5: Solve for x
    x = 20,146,141,116.78/207,020.37
  6. Step 6: Final answer
    x = 97,314.78

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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.