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Finding the Fourth Proportional to 394,894.80, 544,703.94 and 258,937.74

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Solution

The fourth proportional to 394,894.80, 544,703.94 and 258,937.74 is: 357,169.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,894.80 : 544,703.94 = 258,937.74 : x
  2. Step 2: Convert to fraction form
    394,894.80/544,703.94 = 258,937.74/x
  3. Step 3: Cross multiply
    394,894.80x = 544,703.94 × 258,937.74
  4. Step 4: Simplify right side
    394,894.80x = 141,044,407,192.70
  5. Step 5: Solve for x
    x = 141,044,407,192.70/394,894.80
  6. Step 6: Final answer
    x = 357,169.57

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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.