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Finding the Fourth Proportional to 331,451.44, 457,386.76 and 188,208.40

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Solution

The fourth proportional to 331,451.44, 457,386.76 and 188,208.40 is: 259,718.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,451.44 : 457,386.76 = 188,208.40 : x
  2. Step 2: Convert to fraction form
    331,451.44/457,386.76 = 188,208.40/x
  3. Step 3: Cross multiply
    331,451.44x = 457,386.76 × 188,208.40
  4. Step 4: Simplify right side
    331,451.44x = 86,084,030,280.78
  5. Step 5: Solve for x
    x = 86,084,030,280.78/331,451.44
  6. Step 6: Final answer
    x = 259,718.38

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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.