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Finding the Fourth Proportional to 312,706.17, 469,059.66 and 219,627.45

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Solution

The fourth proportional to 312,706.17, 469,059.66 and 219,627.45 is: 329,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,706.17 : 469,059.66 = 219,627.45 : x
  2. Step 2: Convert to fraction form
    312,706.17/469,059.66 = 219,627.45/x
  3. Step 3: Cross multiply
    312,706.17x = 469,059.66 × 219,627.45
  4. Step 4: Simplify right side
    312,706.17x = 103,018,377,023.67
  5. Step 5: Solve for x
    x = 103,018,377,023.67/312,706.17
  6. Step 6: Final answer
    x = 329,441.46

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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.