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Finding the Fourth Proportional to 210,495.26, 315,792.47 and 68,329.55

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Solution

The fourth proportional to 210,495.26, 315,792.47 and 68,329.55 is: 102,510.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,495.26 : 315,792.47 = 68,329.55 : x
  2. Step 2: Convert to fraction form
    210,495.26/315,792.47 = 68,329.55/x
  3. Step 3: Cross multiply
    210,495.26x = 315,792.47 × 68,329.55
  4. Step 4: Simplify right side
    210,495.26x = 21,577,957,440.63
  5. Step 5: Solve for x
    x = 21,577,957,440.63/210,495.26
  6. Step 6: Final answer
    x = 102,510.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.