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Finding the Fourth Proportional to 489,236.47, 675,220.14 and 298,360.60

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Solution

The fourth proportional to 489,236.47, 675,220.14 and 298,360.60 is: 411,782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,236.47 : 675,220.14 = 298,360.60 : x
  2. Step 2: Convert to fraction form
    489,236.47/675,220.14 = 298,360.60/x
  3. Step 3: Cross multiply
    489,236.47x = 675,220.14 × 298,360.60
  4. Step 4: Simplify right side
    489,236.47x = 201,459,086,102.48
  5. Step 5: Solve for x
    x = 201,459,086,102.48/489,236.47
  6. Step 6: Final answer
    x = 411,782.64

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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.