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Finding the Fourth Proportional to 260,858.40, 391,460.40 and 148,538.40

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Solution

The fourth proportional to 260,858.40, 391,460.40 and 148,538.40 is: 222,906.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,858.40 : 391,460.40 = 148,538.40 : x
  2. Step 2: Convert to fraction form
    260,858.40/391,460.40 = 148,538.40/x
  3. Step 3: Cross multiply
    260,858.40x = 391,460.40 × 148,538.40
  4. Step 4: Simplify right side
    260,858.40x = 58,146,901,479.36
  5. Step 5: Solve for x
    x = 58,146,901,479.36/260,858.40
  6. Step 6: Final answer
    x = 222,906.00

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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.