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Finding the Fourth Proportional to 260,143.44, 390,195.72 and 93,931.44

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Solution

The fourth proportional to 260,143.44, 390,195.72 and 93,931.44 is: 140,890.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,143.44 : 390,195.72 = 93,931.44 : x
  2. Step 2: Convert to fraction form
    260,143.44/390,195.72 = 93,931.44/x
  3. Step 3: Cross multiply
    260,143.44x = 390,195.72 × 93,931.44
  4. Step 4: Simplify right side
    260,143.44x = 36,651,645,861.44
  5. Step 5: Solve for x
    x = 36,651,645,861.44/260,143.44
  6. Step 6: Final answer
    x = 140,890.14

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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.