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Finding the Fourth Proportional to 352,516.56, 486,421.52 and 201,584.40

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Solution

The fourth proportional to 352,516.56, 486,421.52 and 201,584.40 is: 278,157.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,516.56 : 486,421.52 = 201,584.40 : x
  2. Step 2: Convert to fraction form
    352,516.56/486,421.52 = 201,584.40/x
  3. Step 3: Cross multiply
    352,516.56x = 486,421.52 × 201,584.40
  4. Step 4: Simplify right side
    352,516.56x = 98,054,989,248.37
  5. Step 5: Solve for x
    x = 98,054,989,248.37/352,516.56
  6. Step 6: Final answer
    x = 278,157.11

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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.