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Finding the Fourth Proportional to 274,463.75, 378,776.67 and 153,602.57

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Solution

The fourth proportional to 274,463.75, 378,776.67 and 153,602.57 is: 211,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,463.75 : 378,776.67 = 153,602.57 : x
  2. Step 2: Convert to fraction form
    274,463.75/378,776.67 = 153,602.57/x
  3. Step 3: Cross multiply
    274,463.75x = 378,776.67 × 153,602.57
  4. Step 4: Simplify right side
    274,463.75x = 58,181,069,968.04
  5. Step 5: Solve for x
    x = 58,181,069,968.04/274,463.75
  6. Step 6: Final answer
    x = 211,980.89

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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.