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Finding the Fourth Proportional to 274,574, 378,918.44 and 153,712.24

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Solution

The fourth proportional to 274,574, 378,918.44 and 153,712.24 is: 212,126.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,574 : 378,918.44 = 153,712.24 : x
  2. Step 2: Convert to fraction form
    274,574/378,918.44 = 153,712.24/x
  3. Step 3: Cross multiply
    274,574x = 378,918.44 × 153,712.24
  4. Step 4: Simplify right side
    274,574x = 58,244,402,189.71
  5. Step 5: Solve for x
    x = 58,244,402,189.71/274,574
  6. Step 6: Final answer
    x = 212,126.43

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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.