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Finding the Fourth Proportional to 259,710.67, 390,190.29 and 245,372.86

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Solution

The fourth proportional to 259,710.67, 390,190.29 and 245,372.86 is: 368,649.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,710.67 : 390,190.29 = 245,372.86 : x
  2. Step 2: Convert to fraction form
    259,710.67/390,190.29 = 245,372.86/x
  3. Step 3: Cross multiply
    259,710.67x = 390,190.29 × 245,372.86
  4. Step 4: Simplify right side
    259,710.67x = 95,742,107,401.53
  5. Step 5: Solve for x
    x = 95,742,107,401.53/259,710.67
  6. Step 6: Final answer
    x = 368,649.11

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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.