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Finding the Fourth Proportional to 353,921.51, 488,518.41 and 240,809.87

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Solution

The fourth proportional to 353,921.51, 488,518.41 and 240,809.87 is: 332,390.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,921.51 : 488,518.41 = 240,809.87 : x
  2. Step 2: Convert to fraction form
    353,921.51/488,518.41 = 240,809.87/x
  3. Step 3: Cross multiply
    353,921.51x = 488,518.41 × 240,809.87
  4. Step 4: Simplify right side
    353,921.51x = 117,640,052,362.12
  5. Step 5: Solve for x
    x = 117,640,052,362.12/353,921.51
  6. Step 6: Final answer
    x = 332,390.24

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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.