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Finding the Fourth Proportional to 455,999.30, 629,192.41 and 286,156.88

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Solution

The fourth proportional to 455,999.30, 629,192.41 and 286,156.88 is: 394,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,999.30 : 629,192.41 = 286,156.88 : x
  2. Step 2: Convert to fraction form
    455,999.30/629,192.41 = 286,156.88/x
  3. Step 3: Cross multiply
    455,999.30x = 629,192.41 × 286,156.88
  4. Step 4: Simplify right side
    455,999.30x = 180,047,736,965.28
  5. Step 5: Solve for x
    x = 180,047,736,965.28/455,999.30
  6. Step 6: Final answer
    x = 394,842.13

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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.