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Finding the Fourth Proportional to 260,310.33, 390,366.95 and 141,917.22

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Solution

The fourth proportional to 260,310.33, 390,366.95 and 141,917.22 is: 212,822.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,310.33 : 390,366.95 = 141,917.22 : x
  2. Step 2: Convert to fraction form
    260,310.33/390,366.95 = 141,917.22/x
  3. Step 3: Cross multiply
    260,310.33x = 390,366.95 × 141,917.22
  4. Step 4: Simplify right side
    260,310.33x = 55,399,791,614.29
  5. Step 5: Solve for x
    x = 55,399,791,614.29/260,310.33
  6. Step 6: Final answer
    x = 212,822.10

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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.