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Finding the Fourth Proportional to 286,210.80, 394,951.08 and 158,876.40

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Solution

The fourth proportional to 286,210.80, 394,951.08 and 158,876.40 is: 219,238.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,210.80 : 394,951.08 = 158,876.40 : x
  2. Step 2: Convert to fraction form
    286,210.80/394,951.08 = 158,876.40/x
  3. Step 3: Cross multiply
    286,210.80x = 394,951.08 × 158,876.40
  4. Step 4: Simplify right side
    286,210.80x = 62,748,405,766.51
  5. Step 5: Solve for x
    x = 62,748,405,766.51/286,210.80
  6. Step 6: Final answer
    x = 219,238.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.