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Finding the Fourth Proportional to 305,586.68, 421,701.52 and 169,620.24

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Solution

The fourth proportional to 305,586.68, 421,701.52 and 169,620.24 is: 234,071.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,586.68 : 421,701.52 = 169,620.24 : x
  2. Step 2: Convert to fraction form
    305,586.68/421,701.52 = 169,620.24/x
  3. Step 3: Cross multiply
    305,586.68x = 421,701.52 × 169,620.24
  4. Step 4: Simplify right side
    305,586.68x = 71,529,113,030.76
  5. Step 5: Solve for x
    x = 71,529,113,030.76/305,586.68
  6. Step 6: Final answer
    x = 234,071.44

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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.