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Finding the Fourth Proportional to 381,492.72, 526,556.70 and 260,682.84

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Solution

The fourth proportional to 381,492.72, 526,556.70 and 260,682.84 is: 359,808.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,492.72 : 526,556.70 = 260,682.84 : x
  2. Step 2: Convert to fraction form
    381,492.72/526,556.70 = 260,682.84/x
  3. Step 3: Cross multiply
    381,492.72x = 526,556.70 × 260,682.84
  4. Step 4: Simplify right side
    381,492.72x = 137,264,295,977.03
  5. Step 5: Solve for x
    x = 137,264,295,977.03/381,492.72
  6. Step 6: Final answer
    x = 359,808.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.