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Finding the Fourth Proportional to 340,728.54, 470,208.48 and 187,772.21

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Solution

The fourth proportional to 340,728.54, 470,208.48 and 187,772.21 is: 259,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,728.54 : 470,208.48 = 187,772.21 : x
  2. Step 2: Convert to fraction form
    340,728.54/470,208.48 = 187,772.21/x
  3. Step 3: Cross multiply
    340,728.54x = 470,208.48 × 187,772.21
  4. Step 4: Simplify right side
    340,728.54x = 88,292,085,450.34
  5. Step 5: Solve for x
    x = 88,292,085,450.34/340,728.54
  6. Step 6: Final answer
    x = 259,127.36

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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.