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Finding the Fourth Proportional to 540,615.50, 810,135.90 and 259,804.70

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Solution

The fourth proportional to 540,615.50, 810,135.90 and 259,804.70 is: 389,328.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,615.50 : 810,135.90 = 259,804.70 : x
  2. Step 2: Convert to fraction form
    540,615.50/810,135.90 = 259,804.70/x
  3. Step 3: Cross multiply
    540,615.50x = 810,135.90 × 259,804.70
  4. Step 4: Simplify right side
    540,615.50x = 210,477,114,458.73
  5. Step 5: Solve for x
    x = 210,477,114,458.73/540,615.50
  6. Step 6: Final answer
    x = 389,328.67

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1.5x scale

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.