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Finding the Fourth Proportional to 419,656.71, 579,125.37 and 228,669.66

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Solution

The fourth proportional to 419,656.71, 579,125.37 and 228,669.66 is: 315,563.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,656.71 : 579,125.37 = 228,669.66 : x
  2. Step 2: Convert to fraction form
    419,656.71/579,125.37 = 228,669.66/x
  3. Step 3: Cross multiply
    419,656.71x = 579,125.37 × 228,669.66
  4. Step 4: Simplify right side
    419,656.71x = 132,428,401,455.27
  5. Step 5: Solve for x
    x = 132,428,401,455.27/419,656.71
  6. Step 6: Final answer
    x = 315,563.65

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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.