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Finding the Fourth Proportional to 808,108, 1,212,168.08 and 358,708.06

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Solution

The fourth proportional to 808,108, 1,212,168.08 and 358,708.06 is: 538,064.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,108 : 1,212,168.08 = 358,708.06 : x
  2. Step 2: Convert to fraction form
    808,108/1,212,168.08 = 358,708.06/x
  3. Step 3: Cross multiply
    808,108x = 1,212,168.08 × 358,708.06
  4. Step 4: Simplify right side
    808,108x = 434,814,460,370.73
  5. Step 5: Solve for x
    x = 434,814,460,370.73/808,108
  6. Step 6: Final answer
    x = 538,064.79

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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.