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Finding the Fourth Proportional to 353,161.36, 487,039.80 and 262,743.76

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Solution

The fourth proportional to 353,161.36, 487,039.80 and 262,743.76 is: 362,346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,161.36 : 487,039.80 = 262,743.76 : x
  2. Step 2: Convert to fraction form
    353,161.36/487,039.80 = 262,743.76/x
  3. Step 3: Cross multiply
    353,161.36x = 487,039.80 × 262,743.76
  4. Step 4: Simplify right side
    353,161.36x = 127,966,668,321.65
  5. Step 5: Solve for x
    x = 127,966,668,321.65/353,161.36
  6. Step 6: Final answer
    x = 362,346.18

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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.