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Finding the Fourth Proportional to 356,353.04, 491,580.77 and 220,343.51

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Solution

The fourth proportional to 356,353.04, 491,580.77 and 220,343.51 is: 303,958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,353.04 : 491,580.77 = 220,343.51 : x
  2. Step 2: Convert to fraction form
    356,353.04/491,580.77 = 220,343.51/x
  3. Step 3: Cross multiply
    356,353.04x = 491,580.77 × 220,343.51
  4. Step 4: Simplify right side
    356,353.04x = 108,316,632,437.54
  5. Step 5: Solve for x
    x = 108,316,632,437.54/356,353.04
  6. Step 6: Final answer
    x = 303,958.77

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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.