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Finding the Fourth Proportional to 355,519.27, 490,624.32 and 212,252.59

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Solution

The fourth proportional to 355,519.27, 490,624.32 and 212,252.59 is: 292,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,519.27 : 490,624.32 = 212,252.59 : x
  2. Step 2: Convert to fraction form
    355,519.27/490,624.32 = 212,252.59/x
  3. Step 3: Cross multiply
    355,519.27x = 490,624.32 × 212,252.59
  4. Step 4: Simplify right side
    355,519.27x = 104,136,282,636.99
  5. Step 5: Solve for x
    x = 104,136,282,636.99/355,519.27
  6. Step 6: Final answer
    x = 292,913.19

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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.