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Finding the Fourth Proportional to 393,530.30, 590,951.55 and 260,998.10

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Solution

The fourth proportional to 393,530.30, 590,951.55 and 260,998.10 is: 391,932.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,530.30 : 590,951.55 = 260,998.10 : x
  2. Step 2: Convert to fraction form
    393,530.30/590,951.55 = 260,998.10/x
  3. Step 3: Cross multiply
    393,530.30x = 590,951.55 × 260,998.10
  4. Step 4: Simplify right side
    393,530.30x = 154,237,231,742.06
  5. Step 5: Solve for x
    x = 154,237,231,742.06/393,530.30
  6. Step 6: Final answer
    x = 391,932.29

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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.