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Finding the Fourth Proportional to 260,118.51, 358,958.07 and 145,393.95

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Solution

The fourth proportional to 260,118.51, 358,958.07 and 145,393.95 is: 200,640.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,118.51 : 358,958.07 = 145,393.95 : x
  2. Step 2: Convert to fraction form
    260,118.51/358,958.07 = 145,393.95/x
  3. Step 3: Cross multiply
    260,118.51x = 358,958.07 × 145,393.95
  4. Step 4: Simplify right side
    260,118.51x = 52,190,331,681.68
  5. Step 5: Solve for x
    x = 52,190,331,681.68/260,118.51
  6. Step 6: Final answer
    x = 200,640.59

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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.