Home / 321,328.31-442,921.52-253,236.06

Finding the Fourth Proportional to 321,328.31, 442,921.52 and 253,236.06

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Solution

The fourth proportional to 321,328.31, 442,921.52 and 253,236.06 is: 349,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,328.31 : 442,921.52 = 253,236.06 : x
  2. Step 2: Convert to fraction form
    321,328.31/442,921.52 = 253,236.06/x
  3. Step 3: Cross multiply
    321,328.31x = 442,921.52 × 253,236.06
  4. Step 4: Simplify right side
    321,328.31x = 112,163,699,347.83
  5. Step 5: Solve for x
    x = 112,163,699,347.83/321,328.31
  6. Step 6: Final answer
    x = 349,062.62

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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.