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Finding the Fourth Proportional to 465,427.07, 698,180.67 and 128,467.77

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Solution

The fourth proportional to 465,427.07, 698,180.67 and 128,467.77 is: 192,712.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,427.07 : 698,180.67 = 128,467.77 : x
  2. Step 2: Convert to fraction form
    465,427.07/698,180.67 = 128,467.77/x
  3. Step 3: Cross multiply
    465,427.07x = 698,180.67 × 128,467.77
  4. Step 4: Simplify right side
    465,427.07x = 89,693,713,732.01
  5. Step 5: Solve for x
    x = 89,693,713,732.01/465,427.07
  6. Step 6: Final answer
    x = 192,712.72

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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.