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Finding the Fourth Proportional to 268,212.35, 370,042.79 and 151,909.98

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Solution

The fourth proportional to 268,212.35, 370,042.79 and 151,909.98 is: 209,584.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,212.35 : 370,042.79 = 151,909.98 : x
  2. Step 2: Convert to fraction form
    268,212.35/370,042.79 = 151,909.98/x
  3. Step 3: Cross multiply
    268,212.35x = 370,042.79 × 151,909.98
  4. Step 4: Simplify right side
    268,212.35x = 56,213,192,068.49
  5. Step 5: Solve for x
    x = 56,213,192,068.49/268,212.35
  6. Step 6: Final answer
    x = 209,584.66

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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.