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Finding the Fourth Proportional to 260,143.40, 359,055.80 and 158,147.25

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Solution

The fourth proportional to 260,143.40, 359,055.80 and 158,147.25 is: 218,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,143.40 : 359,055.80 = 158,147.25 : x
  2. Step 2: Convert to fraction form
    260,143.40/359,055.80 = 158,147.25/x
  3. Step 3: Cross multiply
    260,143.40x = 359,055.80 × 158,147.25
  4. Step 4: Simplify right side
    260,143.40x = 56,783,686,575.81
  5. Step 5: Solve for x
    x = 56,783,686,575.81/260,143.40
  6. Step 6: Final answer
    x = 218,278.41

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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.