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Finding the Fourth Proportional to 259,559.34, 389,339.37 and 72,570.66

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Solution

The fourth proportional to 259,559.34, 389,339.37 and 72,570.66 is: 108,856.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,559.34 : 389,339.37 = 72,570.66 : x
  2. Step 2: Convert to fraction form
    259,559.34/389,339.37 = 72,570.66/x
  3. Step 3: Cross multiply
    259,559.34x = 389,339.37 × 72,570.66
  4. Step 4: Simplify right side
    259,559.34x = 28,254,615,044.88
  5. Step 5: Solve for x
    x = 28,254,615,044.88/259,559.34
  6. Step 6: Final answer
    x = 108,856.09

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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.