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Finding the Fourth Proportional to 305,003.52, 420,946.08 and 177,719.04

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Solution

The fourth proportional to 305,003.52, 420,946.08 and 177,719.04 is: 245,276.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,003.52 : 420,946.08 = 177,719.04 : x
  2. Step 2: Convert to fraction form
    305,003.52/420,946.08 = 177,719.04/x
  3. Step 3: Cross multiply
    305,003.52x = 420,946.08 × 177,719.04
  4. Step 4: Simplify right side
    305,003.52x = 74,810,133,229.36
  5. Step 5: Solve for x
    x = 74,810,133,229.36/305,003.52
  6. Step 6: Final answer
    x = 245,276.29

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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.