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Finding the Fourth Proportional to 351,602.40, 527,792.40 and 218,632.80

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Solution

The fourth proportional to 351,602.40, 527,792.40 and 218,632.80 is: 328,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,602.40 : 527,792.40 = 218,632.80 : x
  2. Step 2: Convert to fraction form
    351,602.40/527,792.40 = 218,632.80/x
  3. Step 3: Cross multiply
    351,602.40x = 527,792.40 × 218,632.80
  4. Step 4: Simplify right side
    351,602.40x = 115,392,730,230.72
  5. Step 5: Solve for x
    x = 115,392,730,230.72/351,602.40
  6. Step 6: Final answer
    x = 328,190.96

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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.