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Finding the Fourth Proportional to 305,124.84, 421,097.12 and 169,201.39

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Solution

The fourth proportional to 305,124.84, 421,097.12 and 169,201.39 is: 233,511.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,124.84 : 421,097.12 = 169,201.39 : x
  2. Step 2: Convert to fraction form
    305,124.84/421,097.12 = 169,201.39/x
  3. Step 3: Cross multiply
    305,124.84x = 421,097.12 × 169,201.39
  4. Step 4: Simplify right side
    305,124.84x = 71,250,218,029.00
  5. Step 5: Solve for x
    x = 71,250,218,029.00/305,124.84
  6. Step 6: Final answer
    x = 233,511.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.