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Finding the Fourth Proportional to 356,630.77, 492,200.80 and 220,708.49

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Solution

The fourth proportional to 356,630.77, 492,200.80 and 220,708.49 is: 304,608.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,630.77 : 492,200.80 = 220,708.49 : x
  2. Step 2: Convert to fraction form
    356,630.77/492,200.80 = 220,708.49/x
  3. Step 3: Cross multiply
    356,630.77x = 492,200.80 × 220,708.49
  4. Step 4: Simplify right side
    356,630.77x = 108,632,894,957.82
  5. Step 5: Solve for x
    x = 108,632,894,957.82/356,630.77
  6. Step 6: Final answer
    x = 304,608.87

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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.