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Finding the Fourth Proportional to 262,111.80, 392,649.30 and 243,449.40

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Solution

The fourth proportional to 262,111.80, 392,649.30 and 243,449.40 is: 364,692.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,111.80 : 392,649.30 = 243,449.40 : x
  2. Step 2: Convert to fraction form
    262,111.80/392,649.30 = 243,449.40/x
  3. Step 3: Cross multiply
    262,111.80x = 392,649.30 × 243,449.40
  4. Step 4: Simplify right side
    262,111.80x = 95,590,236,495.42
  5. Step 5: Solve for x
    x = 95,590,236,495.42/262,111.80
  6. Step 6: Final answer
    x = 364,692.61

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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.