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Finding the Fourth Proportional to 356,424.88, 491,803.81 and 203,393.20

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Solution

The fourth proportional to 356,424.88, 491,803.81 and 203,393.20 is: 280,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,424.88 : 491,803.81 = 203,393.20 : x
  2. Step 2: Convert to fraction form
    356,424.88/491,803.81 = 203,393.20/x
  3. Step 3: Cross multiply
    356,424.88x = 491,803.81 × 203,393.20
  4. Step 4: Simplify right side
    356,424.88x = 100,029,550,688.09
  5. Step 5: Solve for x
    x = 100,029,550,688.09/356,424.88
  6. Step 6: Final answer
    x = 280,646.94

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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.