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Finding the Fourth Proportional to 482,689.78, 666,241.14 and 301,292.50

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Solution

The fourth proportional to 482,689.78, 666,241.14 and 301,292.50 is: 415,864.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,689.78 : 666,241.14 = 301,292.50 : x
  2. Step 2: Convert to fraction form
    482,689.78/666,241.14 = 301,292.50/x
  3. Step 3: Cross multiply
    482,689.78x = 666,241.14 × 301,292.50
  4. Step 4: Simplify right side
    482,689.78x = 200,733,458,673.45
  5. Step 5: Solve for x
    x = 200,733,458,673.45/482,689.78
  6. Step 6: Final answer
    x = 415,864.32

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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.