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Finding the Fourth Proportional to 305,584.20, 421,695.06 and 169,624.20

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Solution

The fourth proportional to 305,584.20, 421,695.06 and 169,624.20 is: 234,075.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,584.20 : 421,695.06 = 169,624.20 : x
  2. Step 2: Convert to fraction form
    305,584.20/421,695.06 = 169,624.20/x
  3. Step 3: Cross multiply
    305,584.20x = 421,695.06 × 169,624.20
  4. Step 4: Simplify right side
    305,584.20x = 71,529,687,196.45
  5. Step 5: Solve for x
    x = 71,529,687,196.45/305,584.20
  6. Step 6: Final answer
    x = 234,075.21

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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.