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Finding the Fourth Proportional to 262,939.70, 393,955.95 and 122,410.10

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Solution

The fourth proportional to 262,939.70, 393,955.95 and 122,410.10 is: 183,403.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,939.70 : 393,955.95 = 122,410.10 : x
  2. Step 2: Convert to fraction form
    262,939.70/393,955.95 = 122,410.10/x
  3. Step 3: Cross multiply
    262,939.70x = 393,955.95 × 122,410.10
  4. Step 4: Simplify right side
    262,939.70x = 48,224,187,235.10
  5. Step 5: Solve for x
    x = 48,224,187,235.10/262,939.70
  6. Step 6: Final answer
    x = 183,403.98

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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.