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Finding the Fourth Proportional to 435,455.56, 653,186.58 and 119,929.78

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Solution

The fourth proportional to 435,455.56, 653,186.58 and 119,929.78 is: 179,895.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,455.56 : 653,186.58 = 119,929.78 : x
  2. Step 2: Convert to fraction form
    435,455.56/653,186.58 = 119,929.78/x
  3. Step 3: Cross multiply
    435,455.56x = 653,186.58 × 119,929.78
  4. Step 4: Simplify right side
    435,455.56x = 78,336,522,838.35
  5. Step 5: Solve for x
    x = 78,336,522,838.35/435,455.56
  6. Step 6: Final answer
    x = 179,895.56

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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.