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Finding the Fourth Proportional to 207,003.68, 310,426.72 and 135,907.30

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Solution

The fourth proportional to 207,003.68, 310,426.72 and 135,907.30 is: 203,809.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,003.68 : 310,426.72 = 135,907.30 : x
  2. Step 2: Convert to fraction form
    207,003.68/310,426.72 = 135,907.30/x
  3. Step 3: Cross multiply
    207,003.68x = 310,426.72 × 135,907.30
  4. Step 4: Simplify right side
    207,003.68x = 42,189,257,363.06
  5. Step 5: Solve for x
    x = 42,189,257,363.06/207,003.68
  6. Step 6: Final answer
    x = 203,809.21

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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.