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Finding the Fourth Proportional to 305,259.63, 421,258.28 and 169,314.39

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Solution

The fourth proportional to 305,259.63, 421,258.28 and 169,314.39 is: 233,653.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,259.63 : 421,258.28 = 169,314.39 : x
  2. Step 2: Convert to fraction form
    305,259.63/421,258.28 = 169,314.39/x
  3. Step 3: Cross multiply
    305,259.63x = 421,258.28 × 169,314.39
  4. Step 4: Simplify right side
    305,259.63x = 71,325,088,710.65
  5. Step 5: Solve for x
    x = 71,325,088,710.65/305,259.63
  6. Step 6: Final answer
    x = 233,653.85

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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.