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Finding the Fourth Proportional to 260,071.78, 390,418.80 and 154,940.26

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Solution

The fourth proportional to 260,071.78, 390,418.80 and 154,940.26 is: 232,595.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,071.78 : 390,418.80 = 154,940.26 : x
  2. Step 2: Convert to fraction form
    260,071.78/390,418.80 = 154,940.26/x
  3. Step 3: Cross multiply
    260,071.78x = 390,418.80 × 154,940.26
  4. Step 4: Simplify right side
    260,071.78x = 60,491,590,380.89
  5. Step 5: Solve for x
    x = 60,491,590,380.89/260,071.78
  6. Step 6: Final answer
    x = 232,595.75

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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.