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Finding the Fourth Proportional to 352,944.64, 487,011.84 and 209,710.72

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Solution

The fourth proportional to 352,944.64, 487,011.84 and 209,710.72 is: 289,370.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,944.64 : 487,011.84 = 209,710.72 : x
  2. Step 2: Convert to fraction form
    352,944.64/487,011.84 = 209,710.72/x
  3. Step 3: Cross multiply
    352,944.64x = 487,011.84 × 209,710.72
  4. Step 4: Simplify right side
    352,944.64x = 102,131,603,614.93
  5. Step 5: Solve for x
    x = 102,131,603,614.93/352,944.64
  6. Step 6: Final answer
    x = 289,370.04

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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.