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Finding the Fourth Proportional to 260,802.70, 391,204.05 and 134,442.70

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Solution

The fourth proportional to 260,802.70, 391,204.05 and 134,442.70 is: 201,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,802.70 : 391,204.05 = 134,442.70 : x
  2. Step 2: Convert to fraction form
    260,802.70/391,204.05 = 134,442.70/x
  3. Step 3: Cross multiply
    260,802.70x = 391,204.05 × 134,442.70
  4. Step 4: Simplify right side
    260,802.70x = 52,594,528,732.94
  5. Step 5: Solve for x
    x = 52,594,528,732.94/260,802.70
  6. Step 6: Final answer
    x = 201,664.05

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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.