Home / 398,468,307.88-550,062,589.82-257,408,307.34

Finding the Fourth Proportional to 398,468,307.88, 550,062,589.82 and 257,408,307.34

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Solution

The fourth proportional to 398,468,307.88, 550,062,589.82 and 257,408,307.34 is: 355,337,369.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,468,307.88 : 550,062,589.82 = 257,408,307.34 : x
  2. Step 2: Convert to fraction form
    398,468,307.88/550,062,589.82 = 257,408,307.34/x
  3. Step 3: Cross multiply
    398,468,307.88x = 550,062,589.82 × 257,408,307.34
  4. Step 4: Simplify right side
    398,468,307.88x = 141,590,680,176,622,928
  5. Step 5: Solve for x
    x = 141,590,680,176,622,928/398,468,307.88
  6. Step 6: Final answer
    x = 355,337,369.06

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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.