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Finding the Fourth Proportional to 259,386.79, 389,120.41 and 109,627.71

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Solution

The fourth proportional to 259,386.79, 389,120.41 and 109,627.71 is: 164,458.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,386.79 : 389,120.41 = 109,627.71 : x
  2. Step 2: Convert to fraction form
    259,386.79/389,120.41 = 109,627.71/x
  3. Step 3: Cross multiply
    259,386.79x = 389,120.41 × 109,627.71
  4. Step 4: Simplify right side
    259,386.79x = 42,658,379,462.56
  5. Step 5: Solve for x
    x = 42,658,379,462.56/259,386.79
  6. Step 6: Final answer
    x = 164,458.57

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1.5x scale

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.