Home / 256,039,915.78-353,331,323.46-143,011,057.12

Finding the Fourth Proportional to 256,039,915.78, 353,331,323.46 and 143,011,057.12

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Solution

The fourth proportional to 256,039,915.78, 353,331,323.46 and 143,011,057.12 is: 197,353,158.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,039,915.78 : 353,331,323.46 = 143,011,057.12 : x
  2. Step 2: Convert to fraction form
    256,039,915.78/353,331,323.46 = 143,011,057.12/x
  3. Step 3: Cross multiply
    256,039,915.78x = 353,331,323.46 × 143,011,057.12
  4. Step 4: Simplify right side
    256,039,915.78x = 50,530,286,080,739,928
  5. Step 5: Solve for x
    x = 50,530,286,080,739,928/256,039,915.78
  6. Step 6: Final answer
    x = 197,353,158.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.