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Finding the Fourth Proportional to 369,672.22, 509,953.73 and 321,165.16

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Solution

The fourth proportional to 369,672.22, 509,953.73 and 321,165.16 is: 443,039.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,672.22 : 509,953.73 = 321,165.16 : x
  2. Step 2: Convert to fraction form
    369,672.22/509,953.73 = 321,165.16/x
  3. Step 3: Cross multiply
    369,672.22x = 509,953.73 × 321,165.16
  4. Step 4: Simplify right side
    369,672.22x = 163,779,371,288.05
  5. Step 5: Solve for x
    x = 163,779,371,288.05/369,672.22
  6. Step 6: Final answer
    x = 443,039.43

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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.