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Finding the Fourth Proportional to 342,446.02, 512,972.71 and 279,490.50

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Solution

The fourth proportional to 342,446.02, 512,972.71 and 279,490.50 is: 418,667.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,446.02 : 512,972.71 = 279,490.50 : x
  2. Step 2: Convert to fraction form
    342,446.02/512,972.71 = 279,490.50/x
  3. Step 3: Cross multiply
    342,446.02x = 512,972.71 × 279,490.50
  4. Step 4: Simplify right side
    342,446.02x = 143,370,999,204.26
  5. Step 5: Solve for x
    x = 143,370,999,204.26/342,446.02
  6. Step 6: Final answer
    x = 418,667.44

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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.