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Finding the Fourth Proportional to 474,730.20, 655,129.44 and 259,890.25

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Solution

The fourth proportional to 474,730.20, 655,129.44 and 259,890.25 is: 358,649.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,730.20 : 655,129.44 = 259,890.25 : x
  2. Step 2: Convert to fraction form
    474,730.20/655,129.44 = 259,890.25/x
  3. Step 3: Cross multiply
    474,730.20x = 655,129.44 × 259,890.25
  4. Step 4: Simplify right side
    474,730.20x = 170,261,752,644.51
  5. Step 5: Solve for x
    x = 170,261,752,644.51/474,730.20
  6. Step 6: Final answer
    x = 358,649.51

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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.