Home / 256,861,100.56-354,468,318.79-139,386,430.80

Finding the Fourth Proportional to 256,861,100.56, 354,468,318.79 and 139,386,430.80

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Solution

The fourth proportional to 256,861,100.56, 354,468,318.79 and 139,386,430.80 is: 192,353,274.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,861,100.56 : 354,468,318.79 = 139,386,430.80 : x
  2. Step 2: Convert to fraction form
    256,861,100.56/354,468,318.79 = 139,386,430.80/x
  3. Step 3: Cross multiply
    256,861,100.56x = 354,468,318.79 × 139,386,430.80
  4. Step 4: Simplify right side
    256,861,100.56x = 49,408,073,786,065,800
  5. Step 5: Solve for x
    x = 49,408,073,786,065,800/256,861,100.56
  6. Step 6: Final answer
    x = 192,353,274.51

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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.