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Finding the Fourth Proportional to 260,551.72, 390,398.28 and 238,762.72

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Solution

The fourth proportional to 260,551.72, 390,398.28 and 238,762.72 is: 357,750.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,551.72 : 390,398.28 = 238,762.72 : x
  2. Step 2: Convert to fraction form
    260,551.72/390,398.28 = 238,762.72/x
  3. Step 3: Cross multiply
    260,551.72x = 390,398.28 × 238,762.72
  4. Step 4: Simplify right side
    260,551.72x = 93,212,555,216.12
  5. Step 5: Solve for x
    x = 93,212,555,216.12/260,551.72
  6. Step 6: Final answer
    x = 357,750.68

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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.