Home / 257,984.63-386,994-68,442.33

Finding the Fourth Proportional to 257,984.63, 386,994 and 68,442.33

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Solution

The fourth proportional to 257,984.63, 386,994 and 68,442.33 is: 102,668.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,984.63 : 386,994 = 68,442.33 : x
  2. Step 2: Convert to fraction form
    257,984.63/386,994 = 68,442.33/x
  3. Step 3: Cross multiply
    257,984.63x = 386,994 × 68,442.33
  4. Step 4: Simplify right side
    257,984.63x = 26,486,771,056.02
  5. Step 5: Solve for x
    x = 26,486,771,056.02/257,984.63
  6. Step 6: Final answer
    x = 102,668.02

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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.