Home / 290,956,903.20-436,435,354.80-259,389,307.80

Finding the Fourth Proportional to 290,956,903.20, 436,435,354.80 and 259,389,307.80

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Solution

The fourth proportional to 290,956,903.20, 436,435,354.80 and 259,389,307.80 is: 389,083,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,956,903.20 : 436,435,354.80 = 259,389,307.80 : x
  2. Step 2: Convert to fraction form
    290,956,903.20/436,435,354.80 = 259,389,307.80/x
  3. Step 3: Cross multiply
    290,956,903.20x = 436,435,354.80 × 259,389,307.80
  4. Step 4: Simplify right side
    290,956,903.20x = 113,206,664,581,019,408
  5. Step 5: Solve for x
    x = 113,206,664,581,019,408/290,956,903.20
  6. Step 6: Final answer
    x = 389,083,961.70

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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.