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Finding the Fourth Proportional to 260,324.58, 390,388.32 and 141,931.48

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Solution

The fourth proportional to 260,324.58, 390,388.32 and 141,931.48 is: 212,843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,324.58 : 390,388.32 = 141,931.48 : x
  2. Step 2: Convert to fraction form
    260,324.58/390,388.32 = 141,931.48/x
  3. Step 3: Cross multiply
    260,324.58x = 390,388.32 × 141,931.48
  4. Step 4: Simplify right side
    260,324.58x = 55,408,392,032.31
  5. Step 5: Solve for x
    x = 55,408,392,032.31/260,324.58
  6. Step 6: Final answer
    x = 212,843.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.