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Finding the Fourth Proportional to 260,301.60, 390,448.30 and 189,672.44

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Solution

The fourth proportional to 260,301.60, 390,448.30 and 189,672.44 is: 284,505.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,301.60 : 390,448.30 = 189,672.44 : x
  2. Step 2: Convert to fraction form
    260,301.60/390,448.30 = 189,672.44/x
  3. Step 3: Cross multiply
    260,301.60x = 390,448.30 × 189,672.44
  4. Step 4: Simplify right side
    260,301.60x = 74,057,279,802.61
  5. Step 5: Solve for x
    x = 74,057,279,802.61/260,301.60
  6. Step 6: Final answer
    x = 284,505.66

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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.