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Finding the Fourth Proportional to 260,560.47, 390,411.41 and 238,771.47

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Solution

The fourth proportional to 260,560.47, 390,411.41 and 238,771.47 is: 357,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,560.47 : 390,411.41 = 238,771.47 : x
  2. Step 2: Convert to fraction form
    260,560.47/390,411.41 = 238,771.47/x
  3. Step 3: Cross multiply
    260,560.47x = 390,411.41 × 238,771.47
  4. Step 4: Simplify right side
    260,560.47x = 93,219,105,076.62
  5. Step 5: Solve for x
    x = 93,219,105,076.62/260,560.47
  6. Step 6: Final answer
    x = 357,763.80

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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.