Home / 257,820.12-386,740.66-122,814.79

Finding the Fourth Proportional to 257,820.12, 386,740.66 and 122,814.79

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Solution

The fourth proportional to 257,820.12, 386,740.66 and 122,814.79 is: 184,227.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,820.12 : 386,740.66 = 122,814.79 : x
  2. Step 2: Convert to fraction form
    257,820.12/386,740.66 = 122,814.79/x
  3. Step 3: Cross multiply
    257,820.12x = 386,740.66 × 122,814.79
  4. Step 4: Simplify right side
    257,820.12x = 47,497,472,942.36
  5. Step 5: Solve for x
    x = 47,497,472,942.36/257,820.12
  6. Step 6: Final answer
    x = 184,227.18

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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.