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Finding the Fourth Proportional to 425,659.52, 638,677.34 and 223,207.32

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Solution

The fourth proportional to 425,659.52, 638,677.34 and 223,207.32 is: 334,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,659.52 : 638,677.34 = 223,207.32 : x
  2. Step 2: Convert to fraction form
    425,659.52/638,677.34 = 223,207.32/x
  3. Step 3: Cross multiply
    425,659.52x = 638,677.34 × 223,207.32
  4. Step 4: Simplify right side
    425,659.52x = 142,557,457,406.13
  5. Step 5: Solve for x
    x = 142,557,457,406.13/425,659.52
  6. Step 6: Final answer
    x = 334,909.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.