Home / 256,861,101.56-354,468,320.17-139,386,431.80

Finding the Fourth Proportional to 256,861,101.56, 354,468,320.17 and 139,386,431.80

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Solution

The fourth proportional to 256,861,101.56, 354,468,320.17 and 139,386,431.80 is: 192,353,275.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,861,101.56 : 354,468,320.17 = 139,386,431.80 : x
  2. Step 2: Convert to fraction form
    256,861,101.56/354,468,320.17 = 139,386,431.80/x
  3. Step 3: Cross multiply
    256,861,101.56x = 354,468,320.17 × 139,386,431.80
  4. Step 4: Simplify right side
    256,861,101.56x = 49,408,074,332,863,928
  5. Step 5: Solve for x
    x = 49,408,074,332,863,928/256,861,101.56
  6. Step 6: Final answer
    x = 192,353,275.89

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1.5x scale

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.