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Finding the Fourth Proportional to 351,840, 485,569.92 and 192,894.72

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Solution

The fourth proportional to 351,840, 485,569.92 and 192,894.72 is: 266,211.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,840 : 485,569.92 = 192,894.72 : x
  2. Step 2: Convert to fraction form
    351,840/485,569.92 = 192,894.72/x
  3. Step 3: Cross multiply
    351,840x = 485,569.92 × 192,894.72
  4. Step 4: Simplify right side
    351,840x = 93,663,873,758.82
  5. Step 5: Solve for x
    x = 93,663,873,758.82/351,840
  6. Step 6: Final answer
    x = 266,211.56

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1.5x scale

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.