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Finding the Fourth Proportional to 305,586.78, 421,689.81 and 169,614.24

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Solution

The fourth proportional to 305,586.78, 421,689.81 and 169,614.24 is: 234,056.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,586.78 : 421,689.81 = 169,614.24 : x
  2. Step 2: Convert to fraction form
    305,586.78/421,689.81 = 169,614.24/x
  3. Step 3: Cross multiply
    305,586.78x = 421,689.81 × 169,614.24
  4. Step 4: Simplify right side
    305,586.78x = 71,524,596,638.89
  5. Step 5: Solve for x
    x = 71,524,596,638.89/305,586.78
  6. Step 6: Final answer
    x = 234,056.58

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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.