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Finding the Fourth Proportional to 343,615.53, 515,216.21 and 154,041.58

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Solution

The fourth proportional to 343,615.53, 515,216.21 and 154,041.58 is: 230,969.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,615.53 : 515,216.21 = 154,041.58 : x
  2. Step 2: Convert to fraction form
    343,615.53/515,216.21 = 154,041.58/x
  3. Step 3: Cross multiply
    343,615.53x = 515,216.21 × 154,041.58
  4. Step 4: Simplify right side
    343,615.53x = 79,364,718,903.82
  5. Step 5: Solve for x
    x = 79,364,718,903.82/343,615.53
  6. Step 6: Final answer
    x = 230,969.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.