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Finding the Fourth Proportional to 340,930.71, 470,485.56 and 187,965.54

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Solution

The fourth proportional to 340,930.71, 470,485.56 and 187,965.54 is: 259,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,930.71 : 470,485.56 = 187,965.54 : x
  2. Step 2: Convert to fraction form
    340,930.71/470,485.56 = 187,965.54/x
  3. Step 3: Cross multiply
    340,930.71x = 470,485.56 × 187,965.54
  4. Step 4: Simplify right side
    340,930.71x = 88,435,072,347.60
  5. Step 5: Solve for x
    x = 88,435,072,347.60/340,930.71
  6. Step 6: Final answer
    x = 259,393.10

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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.