Home / 256,251,015.40-384,339,198.30-74,479,239.40

Finding the Fourth Proportional to 256,251,015.40, 384,339,198.30 and 74,479,239.40

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Solution

The fourth proportional to 256,251,015.40, 384,339,198.30 and 74,479,239.40 is: 111,708,010.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,251,015.40 : 384,339,198.30 = 74,479,239.40 : x
  2. Step 2: Convert to fraction form
    256,251,015.40/384,339,198.30 = 74,479,239.40/x
  3. Step 3: Cross multiply
    256,251,015.40x = 384,339,198.30 × 74,479,239.40
  4. Step 4: Simplify right side
    256,251,015.40x = 28,625,291,160,989,776
  5. Step 5: Solve for x
    x = 28,625,291,160,989,776/256,251,015.40
  6. Step 6: Final answer
    x = 111,708,010.66

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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.