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Finding the Fourth Proportional to 369,615.34, 509,606.80 and 308,449.81

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Solution

The fourth proportional to 369,615.34, 509,606.80 and 308,449.81 is: 425,274.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,615.34 : 509,606.80 = 308,449.81 : x
  2. Step 2: Convert to fraction form
    369,615.34/509,606.80 = 308,449.81/x
  3. Step 3: Cross multiply
    369,615.34x = 509,606.80 × 308,449.81
  4. Step 4: Simplify right side
    369,615.34x = 157,188,120,634.71
  5. Step 5: Solve for x
    x = 157,188,120,634.71/369,615.34
  6. Step 6: Final answer
    x = 425,274.88

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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.