Home / 261,858,405.41-392,773,370.74-80,105,583.41

Finding the Fourth Proportional to 261,858,405.41, 392,773,370.74 and 80,105,583.41

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Solution

The fourth proportional to 261,858,405.41, 392,773,370.74 and 80,105,583.41 is: 120,154,019.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,858,405.41 : 392,773,370.74 = 80,105,583.41 : x
  2. Step 2: Convert to fraction form
    261,858,405.41/392,773,370.74 = 80,105,583.41/x
  3. Step 3: Cross multiply
    261,858,405.41x = 392,773,370.74 × 80,105,583.41
  4. Step 4: Simplify right side
    261,858,405.41x = 31,463,340,011,039,924
  5. Step 5: Solve for x
    x = 31,463,340,011,039,924/261,858,405.41
  6. Step 6: Final answer
    x = 120,154,019.73

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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.