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Finding the Fourth Proportional to 420,364.52, 580,117.04 and 229,388.39

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Solution

The fourth proportional to 420,364.52, 580,117.04 and 229,388.39 is: 316,563.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,364.52 : 580,117.04 = 229,388.39 : x
  2. Step 2: Convert to fraction form
    420,364.52/580,117.04 = 229,388.39/x
  3. Step 3: Cross multiply
    420,364.52x = 580,117.04 × 229,388.39
  4. Step 4: Simplify right side
    420,364.52x = 133,072,109,769.64
  5. Step 5: Solve for x
    x = 133,072,109,769.64/420,364.52
  6. Step 6: Final answer
    x = 316,563.61

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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.