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Finding the Fourth Proportional to 260,920.51, 391,374.58 and 83,429.07

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Solution

The fourth proportional to 260,920.51, 391,374.58 and 83,429.07 is: 125,141.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,920.51 : 391,374.58 = 83,429.07 : x
  2. Step 2: Convert to fraction form
    260,920.51/391,374.58 = 83,429.07/x
  3. Step 3: Cross multiply
    260,920.51x = 391,374.58 × 83,429.07
  4. Step 4: Simplify right side
    260,920.51x = 32,652,017,231.04
  5. Step 5: Solve for x
    x = 32,652,017,231.04/260,920.51
  6. Step 6: Final answer
    x = 125,141.63

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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.