Home / 398,848,529.70-550,408,866.93-231,625,908.90

Finding the Fourth Proportional to 398,848,529.70, 550,408,866.93 and 231,625,908.90

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Solution

The fourth proportional to 398,848,529.70, 550,408,866.93 and 231,625,908.90 is: 319,642,532.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,848,529.70 : 550,408,866.93 = 231,625,908.90 : x
  2. Step 2: Convert to fraction form
    398,848,529.70/550,408,866.93 = 231,625,908.90/x
  3. Step 3: Cross multiply
    398,848,529.70x = 550,408,866.93 × 231,625,908.90
  4. Step 4: Simplify right side
    398,848,529.70x = 127,488,954,069,280,400
  5. Step 5: Solve for x
    x = 127,488,954,069,280,400/398,848,529.70
  6. Step 6: Final answer
    x = 319,642,532.38

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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.