Home / 259,266.43-388,632.55-99,298.72

Finding the Fourth Proportional to 259,266.43, 388,632.55 and 99,298.72

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Solution

The fourth proportional to 259,266.43, 388,632.55 and 99,298.72 is: 148,845.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,266.43 : 388,632.55 = 99,298.72 : x
  2. Step 2: Convert to fraction form
    259,266.43/388,632.55 = 99,298.72/x
  3. Step 3: Cross multiply
    259,266.43x = 388,632.55 × 99,298.72
  4. Step 4: Simplify right side
    259,266.43x = 38,590,714,765.34
  5. Step 5: Solve for x
    x = 38,590,714,765.34/259,266.43
  6. Step 6: Final answer
    x = 148,845.78

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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.