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Finding the Fourth Proportional to 471,721.70, 650,809.89 and 308,473.77

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Solution

The fourth proportional to 471,721.70, 650,809.89 and 308,473.77 is: 425,585.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,721.70 : 650,809.89 = 308,473.77 : x
  2. Step 2: Convert to fraction form
    471,721.70/650,809.89 = 308,473.77/x
  3. Step 3: Cross multiply
    471,721.70x = 650,809.89 × 308,473.77
  4. Step 4: Simplify right side
    471,721.70x = 200,757,779,101.32
  5. Step 5: Solve for x
    x = 200,757,779,101.32/471,721.70
  6. Step 6: Final answer
    x = 425,585.21

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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.