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Finding the Fourth Proportional to 352,606.76, 486,528.90 and 209,411.72

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Solution

The fourth proportional to 352,606.76, 486,528.90 and 209,411.72 is: 288,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,606.76 : 486,528.90 = 209,411.72 : x
  2. Step 2: Convert to fraction form
    352,606.76/486,528.90 = 209,411.72/x
  3. Step 3: Cross multiply
    352,606.76x = 486,528.90 × 209,411.72
  4. Step 4: Simplify right side
    352,606.76x = 101,884,853,778.71
  5. Step 5: Solve for x
    x = 101,884,853,778.71/352,606.76
  6. Step 6: Final answer
    x = 288,947.53

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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.