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Finding the Fourth Proportional to 306,825, 423,418.05 and 170,870.85

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Solution

The fourth proportional to 306,825, 423,418.05 and 170,870.85 is: 235,801.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,825 : 423,418.05 = 170,870.85 : x
  2. Step 2: Convert to fraction form
    306,825/423,418.05 = 170,870.85/x
  3. Step 3: Cross multiply
    306,825x = 423,418.05 × 170,870.85
  4. Step 4: Simplify right side
    306,825x = 72,349,802,108.84
  5. Step 5: Solve for x
    x = 72,349,802,108.84/306,825
  6. Step 6: Final answer
    x = 235,801.52

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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.