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Finding the Fourth Proportional to 342,247.47, 472,111.90 and 198,991.68

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Solution

The fourth proportional to 342,247.47, 472,111.90 and 198,991.68 is: 274,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,247.47 : 472,111.90 = 198,991.68 : x
  2. Step 2: Convert to fraction form
    342,247.47/472,111.90 = 198,991.68/x
  3. Step 3: Cross multiply
    342,247.47x = 472,111.90 × 198,991.68
  4. Step 4: Simplify right side
    342,247.47x = 93,946,340,128.99
  5. Step 5: Solve for x
    x = 93,946,340,128.99/342,247.47
  6. Step 6: Final answer
    x = 274,498.27

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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.