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Finding the Fourth Proportional to 260,558.47, 390,408.40 and 238,769.47

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Solution

The fourth proportional to 260,558.47, 390,408.40 and 238,769.47 is: 357,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,558.47 : 390,408.40 = 238,769.47 : x
  2. Step 2: Convert to fraction form
    260,558.47/390,408.40 = 238,769.47/x
  3. Step 3: Cross multiply
    260,558.47x = 390,408.40 × 238,769.47
  4. Step 4: Simplify right side
    260,558.47x = 93,217,606,751.55
  5. Step 5: Solve for x
    x = 93,217,606,751.55/260,558.47
  6. Step 6: Final answer
    x = 357,760.80

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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.