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Finding the Fourth Proportional to 305,323.63, 421,353.34 and 169,353.13

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Solution

The fourth proportional to 305,323.63, 421,353.34 and 169,353.13 is: 233,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,323.63 : 421,353.34 = 169,353.13 : x
  2. Step 2: Convert to fraction form
    305,323.63/421,353.34 = 169,353.13/x
  3. Step 3: Cross multiply
    305,323.63x = 421,353.34 × 169,353.13
  4. Step 4: Simplify right side
    305,323.63x = 71,357,507,230.84
  5. Step 5: Solve for x
    x = 71,357,507,230.84/305,323.63
  6. Step 6: Final answer
    x = 233,711.06

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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.