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Finding the Fourth Proportional to 353,463.71, 487,765.30 and 192,319.38

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Solution

The fourth proportional to 353,463.71, 487,765.30 and 192,319.38 is: 265,392.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,463.71 : 487,765.30 = 192,319.38 : x
  2. Step 2: Convert to fraction form
    353,463.71/487,765.30 = 192,319.38/x
  3. Step 3: Cross multiply
    353,463.71x = 487,765.30 × 192,319.38
  4. Step 4: Simplify right side
    353,463.71x = 93,806,720,081.51
  5. Step 5: Solve for x
    x = 93,806,720,081.51/353,463.71
  6. Step 6: Final answer
    x = 265,392.79

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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.