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Finding the Fourth Proportional to 262,323.40, 392,477.10 and 261,651.40

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Solution

The fourth proportional to 262,323.40, 392,477.10 and 261,651.40 is: 391,471.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,323.40 : 392,477.10 = 261,651.40 : x
  2. Step 2: Convert to fraction form
    262,323.40/392,477.10 = 261,651.40/x
  3. Step 3: Cross multiply
    262,323.40x = 392,477.10 × 261,651.40
  4. Step 4: Simplify right side
    262,323.40x = 102,692,182,682.94
  5. Step 5: Solve for x
    x = 102,692,182,682.94/262,323.40
  6. Step 6: Final answer
    x = 391,471.68

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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.