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Finding the Fourth Proportional to 260,138.40, 390,110.40 and 102,334.20

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Solution

The fourth proportional to 260,138.40, 390,110.40 and 102,334.20 is: 153,463.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,138.40 : 390,110.40 = 102,334.20 : x
  2. Step 2: Convert to fraction form
    260,138.40/390,110.40 = 102,334.20/x
  3. Step 3: Cross multiply
    260,138.40x = 390,110.40 × 102,334.20
  4. Step 4: Simplify right side
    260,138.40x = 39,921,635,695.68
  5. Step 5: Solve for x
    x = 39,921,635,695.68/260,138.40
  6. Step 6: Final answer
    x = 153,463.06

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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.