Home / 208,264,381.44-312,399,846.72-78,837,242.88

Finding the Fourth Proportional to 208,264,381.44, 312,399,846.72 and 78,837,242.88

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Solution

The fourth proportional to 208,264,381.44, 312,399,846.72 and 78,837,242.88 is: 118,257,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,264,381.44 : 312,399,846.72 = 78,837,242.88 : x
  2. Step 2: Convert to fraction form
    208,264,381.44/312,399,846.72 = 78,837,242.88/x
  3. Step 3: Cross multiply
    208,264,381.44x = 312,399,846.72 × 78,837,242.88
  4. Step 4: Simplify right side
    208,264,381.44x = 24,628,742,591,539,412
  5. Step 5: Solve for x
    x = 24,628,742,591,539,412/208,264,381.44
  6. Step 6: Final answer
    x = 118,257,103.89

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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.