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Finding the Fourth Proportional to 391,303.26, 586,954.89 and 110,820.51

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Solution

The fourth proportional to 391,303.26, 586,954.89 and 110,820.51 is: 166,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,303.26 : 586,954.89 = 110,820.51 : x
  2. Step 2: Convert to fraction form
    391,303.26/586,954.89 = 110,820.51/x
  3. Step 3: Cross multiply
    391,303.26x = 586,954.89 × 110,820.51
  4. Step 4: Simplify right side
    391,303.26x = 65,046,640,256.79
  5. Step 5: Solve for x
    x = 65,046,640,256.79/391,303.26
  6. Step 6: Final answer
    x = 166,230.77

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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.