Home / 259,929.84-389,894.04-212,690.64

Finding the Fourth Proportional to 259,929.84, 389,894.04 and 212,690.64

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Solution

The fourth proportional to 259,929.84, 389,894.04 and 212,690.64 is: 319,035.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,929.84 : 389,894.04 = 212,690.64 : x
  2. Step 2: Convert to fraction form
    259,929.84/389,894.04 = 212,690.64/x
  3. Step 3: Cross multiply
    259,929.84x = 389,894.04 × 212,690.64
  4. Step 4: Simplify right side
    259,929.84x = 82,926,812,899.79
  5. Step 5: Solve for x
    x = 82,926,812,899.79/259,929.84
  6. Step 6: Final answer
    x = 319,035.37

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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.