Home / 261,930.41-390,603.20-259,536.05

Finding the Fourth Proportional to 261,930.41, 390,603.20 and 259,536.05

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Solution

The fourth proportional to 261,930.41, 390,603.20 and 259,536.05 is: 387,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,930.41 : 390,603.20 = 259,536.05 : x
  2. Step 2: Convert to fraction form
    261,930.41/390,603.20 = 259,536.05/x
  3. Step 3: Cross multiply
    261,930.41x = 390,603.20 × 259,536.05
  4. Step 4: Simplify right side
    261,930.41x = 101,375,609,692.34
  5. Step 5: Solve for x
    x = 101,375,609,692.34/261,930.41
  6. Step 6: Final answer
    x = 387,032.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.