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Finding the Fourth Proportional to 422,622.50, 583,035.77 and 279,581.76

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Solution

The fourth proportional to 422,622.50, 583,035.77 and 279,581.76 is: 385,701.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,622.50 : 583,035.77 = 279,581.76 : x
  2. Step 2: Convert to fraction form
    422,622.50/583,035.77 = 279,581.76/x
  3. Step 3: Cross multiply
    422,622.50x = 583,035.77 × 279,581.76
  4. Step 4: Simplify right side
    422,622.50x = 163,006,167,418.51
  5. Step 5: Solve for x
    x = 163,006,167,418.51/422,622.50
  6. Step 6: Final answer
    x = 385,701.59

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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.