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Finding the Fourth Proportional to 260,479.34, 390,789.14 and 134,050.70

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Solution

The fourth proportional to 260,479.34, 390,789.14 and 134,050.70 is: 201,112.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,479.34 : 390,789.14 = 134,050.70 : x
  2. Step 2: Convert to fraction form
    260,479.34/390,789.14 = 134,050.70/x
  3. Step 3: Cross multiply
    260,479.34x = 390,789.14 × 134,050.70
  4. Step 4: Simplify right side
    260,479.34x = 52,385,557,769.40
  5. Step 5: Solve for x
    x = 52,385,557,769.40/260,479.34
  6. Step 6: Final answer
    x = 201,112.14

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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.