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Finding the Fourth Proportional to 352,502.13, 486,461.16 and 209,262.72

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Solution

The fourth proportional to 352,502.13, 486,461.16 and 209,262.72 is: 288,787.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,502.13 : 486,461.16 = 209,262.72 : x
  2. Step 2: Convert to fraction form
    352,502.13/486,461.16 = 209,262.72/x
  3. Step 3: Cross multiply
    352,502.13x = 486,461.16 × 209,262.72
  4. Step 4: Simplify right side
    352,502.13x = 101,798,185,515.96
  5. Step 5: Solve for x
    x = 101,798,185,515.96/352,502.13
  6. Step 6: Final answer
    x = 288,787.43

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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.