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Finding the Fourth Proportional to 305,352.89, 421,389.32 and 167,530.89

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Solution

The fourth proportional to 305,352.89, 421,389.32 and 167,530.89 is: 231,193.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,352.89 : 421,389.32 = 167,530.89 : x
  2. Step 2: Convert to fraction form
    305,352.89/421,389.32 = 167,530.89/x
  3. Step 3: Cross multiply
    305,352.89x = 421,389.32 × 167,530.89
  4. Step 4: Simplify right side
    305,352.89x = 70,595,726,978.44
  5. Step 5: Solve for x
    x = 70,595,726,978.44/305,352.89
  6. Step 6: Final answer
    x = 231,193.91

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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.