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Finding the Fourth Proportional to 353,291.87, 487,538.01 and 192,143.45

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Solution

The fourth proportional to 353,291.87, 487,538.01 and 192,143.45 is: 265,155.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,291.87 : 487,538.01 = 192,143.45 : x
  2. Step 2: Convert to fraction form
    353,291.87/487,538.01 = 192,143.45/x
  3. Step 3: Cross multiply
    353,291.87x = 487,538.01 × 192,143.45
  4. Step 4: Simplify right side
    353,291.87x = 93,677,232,809.84
  5. Step 5: Solve for x
    x = 93,677,232,809.84/353,291.87
  6. Step 6: Final answer
    x = 265,155.36

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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.