Home / 420,904.80-580,861.08-229,921.32

Finding the Fourth Proportional to 420,904.80, 580,861.08 and 229,921.32

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Solution

The fourth proportional to 420,904.80, 580,861.08 and 229,921.32 is: 317,298.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,904.80 : 580,861.08 = 229,921.32 : x
  2. Step 2: Convert to fraction form
    420,904.80/580,861.08 = 229,921.32/x
  3. Step 3: Cross multiply
    420,904.80x = 580,861.08 × 229,921.32
  4. Step 4: Simplify right side
    420,904.80x = 133,552,346,250.23
  5. Step 5: Solve for x
    x = 133,552,346,250.23/420,904.80
  6. Step 6: Final answer
    x = 317,298.23

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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.