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Finding the Fourth Proportional to 355,424.22, 490,406.40 and 204,521.22

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Solution

The fourth proportional to 355,424.22, 490,406.40 and 204,521.22 is: 282,193.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,424.22 : 490,406.40 = 204,521.22 : x
  2. Step 2: Convert to fraction form
    355,424.22/490,406.40 = 204,521.22/x
  3. Step 3: Cross multiply
    355,424.22x = 490,406.40 × 204,521.22
  4. Step 4: Simplify right side
    355,424.22x = 100,298,515,223.81
  5. Step 5: Solve for x
    x = 100,298,515,223.81/355,424.22
  6. Step 6: Final answer
    x = 282,193.81

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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.