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Finding the Fourth Proportional to 340,390.78, 469,802.26 and 197,150.78

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Solution

The fourth proportional to 340,390.78, 469,802.26 and 197,150.78 is: 272,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,390.78 : 469,802.26 = 197,150.78 : x
  2. Step 2: Convert to fraction form
    340,390.78/469,802.26 = 197,150.78/x
  3. Step 3: Cross multiply
    340,390.78x = 469,802.26 × 197,150.78
  4. Step 4: Simplify right side
    340,390.78x = 92,621,882,004.76
  5. Step 5: Solve for x
    x = 92,621,882,004.76/340,390.78
  6. Step 6: Final answer
    x = 272,104.56

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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.