Home / 256,634,806.43-384,798,479.30-81,682,270.17

Finding the Fourth Proportional to 256,634,806.43, 384,798,479.30 and 81,682,270.17

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Solution

The fourth proportional to 256,634,806.43, 384,798,479.30 and 81,682,270.17 is: 122,474,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,634,806.43 : 384,798,479.30 = 81,682,270.17 : x
  2. Step 2: Convert to fraction form
    256,634,806.43/384,798,479.30 = 81,682,270.17/x
  3. Step 3: Cross multiply
    256,634,806.43x = 384,798,479.30 × 81,682,270.17
  4. Step 4: Simplify right side
    256,634,806.43x = 31,431,213,346,779,344
  5. Step 5: Solve for x
    x = 31,431,213,346,779,344/256,634,806.43
  6. Step 6: Final answer
    x = 122,474,475.64

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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.