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Finding the Fourth Proportional to 409,859.90, 565,605.54 and 228,572.02

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Solution

The fourth proportional to 409,859.90, 565,605.54 and 228,572.02 is: 315,428.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,859.90 : 565,605.54 = 228,572.02 : x
  2. Step 2: Convert to fraction form
    409,859.90/565,605.54 = 228,572.02/x
  3. Step 3: Cross multiply
    409,859.90x = 565,605.54 × 228,572.02
  4. Step 4: Simplify right side
    409,859.90x = 129,281,600,800.99
  5. Step 5: Solve for x
    x = 129,281,600,800.99/409,859.90
  6. Step 6: Final answer
    x = 315,428.76

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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.