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Finding the Fourth Proportional to 402,652, 555,645.60 and 221,362.61

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Solution

The fourth proportional to 402,652, 555,645.60 and 221,362.61 is: 305,472.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,652 : 555,645.60 = 221,362.61 : x
  2. Step 2: Convert to fraction form
    402,652/555,645.60 = 221,362.61/x
  3. Step 3: Cross multiply
    402,652x = 555,645.60 × 221,362.61
  4. Step 4: Simplify right side
    402,652x = 122,999,160,251.02
  5. Step 5: Solve for x
    x = 122,999,160,251.02/402,652
  6. Step 6: Final answer
    x = 305,472.62

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.