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Finding the Fourth Proportional to 613,288.98, 919,868.76 and 164,055.21

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Solution

The fourth proportional to 613,288.98, 919,868.76 and 164,055.21 is: 246,065.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,288.98 : 919,868.76 = 164,055.21 : x
  2. Step 2: Convert to fraction form
    613,288.98/919,868.76 = 164,055.21/x
  3. Step 3: Cross multiply
    613,288.98x = 919,868.76 × 164,055.21
  4. Step 4: Simplify right side
    613,288.98x = 150,909,262,594.24
  5. Step 5: Solve for x
    x = 150,909,262,594.24/613,288.98
  6. Step 6: Final answer
    x = 246,065.51

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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.