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Finding the Fourth Proportional to 355,530.16, 490,632.51 and 194,395.60

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Solution

The fourth proportional to 355,530.16, 490,632.51 and 194,395.60 is: 268,266.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,530.16 : 490,632.51 = 194,395.60 : x
  2. Step 2: Convert to fraction form
    355,530.16/490,632.51 = 194,395.60/x
  3. Step 3: Cross multiply
    355,530.16x = 490,632.51 × 194,395.60
  4. Step 4: Simplify right side
    355,530.16x = 95,376,801,160.96
  5. Step 5: Solve for x
    x = 95,376,801,160.96/355,530.16
  6. Step 6: Final answer
    x = 268,266.41

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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.