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Finding the Fourth Proportional to 668,608.56, 1,002,208.20 and 219,212.16

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Solution

The fourth proportional to 668,608.56, 1,002,208.20 and 219,212.16 is: 328,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,608.56 : 1,002,208.20 = 219,212.16 : x
  2. Step 2: Convert to fraction form
    668,608.56/1,002,208.20 = 219,212.16/x
  3. Step 3: Cross multiply
    668,608.56x = 1,002,208.20 × 219,212.16
  4. Step 4: Simplify right side
    668,608.56x = 219,696,224,291.71
  5. Step 5: Solve for x
    x = 219,696,224,291.71/668,608.56
  6. Step 6: Final answer
    x = 328,587.21

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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.