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Finding the Fourth Proportional to 482,203.61, 721,886.51 and 321,881.89

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Solution

The fourth proportional to 482,203.61, 721,886.51 and 321,881.89 is: 481,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,203.61 : 721,886.51 = 321,881.89 : x
  2. Step 2: Convert to fraction form
    482,203.61/721,886.51 = 321,881.89/x
  3. Step 3: Cross multiply
    482,203.61x = 721,886.51 × 321,881.89
  4. Step 4: Simplify right side
    482,203.61x = 232,362,194,204.30
  5. Step 5: Solve for x
    x = 232,362,194,204.30/482,203.61
  6. Step 6: Final answer
    x = 481,875.68

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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.