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Finding the Fourth Proportional to 482,688.78, 666,239.76 and 301,291.50

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Solution

The fourth proportional to 482,688.78, 666,239.76 and 301,291.50 is: 415,862.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,688.78 : 666,239.76 = 301,291.50 : x
  2. Step 2: Convert to fraction form
    482,688.78/666,239.76 = 301,291.50/x
  3. Step 3: Cross multiply
    482,688.78x = 666,239.76 × 301,291.50
  4. Step 4: Simplify right side
    482,688.78x = 200,732,376,650.04
  5. Step 5: Solve for x
    x = 200,732,376,650.04/482,688.78
  6. Step 6: Final answer
    x = 415,862.94

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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.