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Finding the Fourth Proportional to 355,549.32, 490,665.72 and 212,282.64

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Solution

The fourth proportional to 355,549.32, 490,665.72 and 212,282.64 is: 292,954.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,549.32 : 490,665.72 = 212,282.64 : x
  2. Step 2: Convert to fraction form
    355,549.32/490,665.72 = 212,282.64/x
  3. Step 3: Cross multiply
    355,549.32x = 490,665.72 × 212,282.64
  4. Step 4: Simplify right side
    355,549.32x = 104,159,814,399.10
  5. Step 5: Solve for x
    x = 104,159,814,399.10/355,549.32
  6. Step 6: Final answer
    x = 292,954.62

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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.