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Finding the Fourth Proportional to 286,179.83, 394,702.82 and 253,509.19

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Solution

The fourth proportional to 286,179.83, 394,702.82 and 253,509.19 is: 349,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,179.83 : 394,702.82 = 253,509.19 : x
  2. Step 2: Convert to fraction form
    286,179.83/394,702.82 = 253,509.19/x
  3. Step 3: Cross multiply
    286,179.83x = 394,702.82 × 253,509.19
  4. Step 4: Simplify right side
    286,179.83x = 100,060,788,947.86
  5. Step 5: Solve for x
    x = 100,060,788,947.86/286,179.83
  6. Step 6: Final answer
    x = 349,643.05

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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.