Home / 259,968.90-389,953.35-72,956.10

Finding the Fourth Proportional to 259,968.90, 389,953.35 and 72,956.10

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Solution

The fourth proportional to 259,968.90, 389,953.35 and 72,956.10 is: 109,434.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,968.90 : 389,953.35 = 72,956.10 : x
  2. Step 2: Convert to fraction form
    259,968.90/389,953.35 = 72,956.10/x
  3. Step 3: Cross multiply
    259,968.90x = 389,953.35 × 72,956.10
  4. Step 4: Simplify right side
    259,968.90x = 28,449,475,597.94
  5. Step 5: Solve for x
    x = 28,449,475,597.94/259,968.90
  6. Step 6: Final answer
    x = 109,434.15

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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.