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Finding the Fourth Proportional to 539,718.21, 744,812.22 and 298,001.25

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Solution

The fourth proportional to 539,718.21, 744,812.22 and 298,001.25 is: 411,242.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,718.21 : 744,812.22 = 298,001.25 : x
  2. Step 2: Convert to fraction form
    539,718.21/744,812.22 = 298,001.25/x
  3. Step 3: Cross multiply
    539,718.21x = 744,812.22 × 298,001.25
  4. Step 4: Simplify right side
    539,718.21x = 221,954,972,575.28
  5. Step 5: Solve for x
    x = 221,954,972,575.28/539,718.21
  6. Step 6: Final answer
    x = 411,242.33

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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.