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Finding the Fourth Proportional to 436,907.76, 655,398 and 117,105.12

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Solution

The fourth proportional to 436,907.76, 655,398 and 117,105.12 is: 175,667.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,907.76 : 655,398 = 117,105.12 : x
  2. Step 2: Convert to fraction form
    436,907.76/655,398 = 117,105.12/x
  3. Step 3: Cross multiply
    436,907.76x = 655,398 × 117,105.12
  4. Step 4: Simplify right side
    436,907.76x = 76,750,461,437.76
  5. Step 5: Solve for x
    x = 76,750,461,437.76/436,907.76
  6. Step 6: Final answer
    x = 175,667.43

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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.