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Finding the Fourth Proportional to 485,863.63, 670,492.83 and 270,998.17

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Solution

The fourth proportional to 485,863.63, 670,492.83 and 270,998.17 is: 373,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,863.63 : 670,492.83 = 270,998.17 : x
  2. Step 2: Convert to fraction form
    485,863.63/670,492.83 = 270,998.17/x
  3. Step 3: Cross multiply
    485,863.63x = 670,492.83 × 270,998.17
  4. Step 4: Simplify right side
    485,863.63x = 181,702,329,928.12
  5. Step 5: Solve for x
    x = 181,702,329,928.12/485,863.63
  6. Step 6: Final answer
    x = 373,978.04

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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.