Home / 361,515.18-498,920.82-200,420.76

Finding the Fourth Proportional to 361,515.18, 498,920.82 and 200,420.76

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Solution

The fourth proportional to 361,515.18, 498,920.82 and 200,420.76 is: 276,597.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,515.18 : 498,920.82 = 200,420.76 : x
  2. Step 2: Convert to fraction form
    361,515.18/498,920.82 = 200,420.76/x
  3. Step 3: Cross multiply
    361,515.18x = 498,920.82 × 200,420.76
  4. Step 4: Simplify right side
    361,515.18x = 99,994,089,924.22
  5. Step 5: Solve for x
    x = 99,994,089,924.22/361,515.18
  6. Step 6: Final answer
    x = 276,597.21

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1.5x scale

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.