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Finding the Fourth Proportional to 436,436.80, 653,272.80 and 312,020.80

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Solution

The fourth proportional to 436,436.80, 653,272.80 and 312,020.80 is: 467,042.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,436.80 : 653,272.80 = 312,020.80 : x
  2. Step 2: Convert to fraction form
    436,436.80/653,272.80 = 312,020.80/x
  3. Step 3: Cross multiply
    436,436.80x = 653,272.80 × 312,020.80
  4. Step 4: Simplify right side
    436,436.80x = 203,834,701,674.24
  5. Step 5: Solve for x
    x = 203,834,701,674.24/436,436.80
  6. Step 6: Final answer
    x = 467,042.88

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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.