Home / 391,170,103.20-539,811,585.36-212,552,428.32

Finding the Fourth Proportional to 391,170,103.20, 539,811,585.36 and 212,552,428.32

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Solution

The fourth proportional to 391,170,103.20, 539,811,585.36 and 212,552,428.32 is: 293,320,635.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,170,103.20 : 539,811,585.36 = 212,552,428.32 : x
  2. Step 2: Convert to fraction form
    391,170,103.20/539,811,585.36 = 212,552,428.32/x
  3. Step 3: Cross multiply
    391,170,103.20x = 539,811,585.36 × 212,552,428.32
  4. Step 4: Simplify right side
    391,170,103.20x = 114,738,263,303,536,960
  5. Step 5: Solve for x
    x = 114,738,263,303,536,960/391,170,103.20
  6. Step 6: Final answer
    x = 293,320,635.61

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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.