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Finding the Fourth Proportional to 260,854.56, 360,065.04 and 153,420

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Solution

The fourth proportional to 260,854.56, 360,065.04 and 153,420 is: 211,770.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,854.56 : 360,065.04 = 153,420 : x
  2. Step 2: Convert to fraction form
    260,854.56/360,065.04 = 153,420/x
  3. Step 3: Cross multiply
    260,854.56x = 360,065.04 × 153,420
  4. Step 4: Simplify right side
    260,854.56x = 55,241,178,436.80
  5. Step 5: Solve for x
    x = 55,241,178,436.80/260,854.56
  6. Step 6: Final answer
    x = 211,770.03

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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.