Home / 807,500.40-1,211,255.18-208,420.60

Finding the Fourth Proportional to 807,500.40, 1,211,255.18 and 208,420.60

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Solution

The fourth proportional to 807,500.40, 1,211,255.18 and 208,420.60 is: 312,632.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,500.40 : 1,211,255.18 = 208,420.60 : x
  2. Step 2: Convert to fraction form
    807,500.40/1,211,255.18 = 208,420.60/x
  3. Step 3: Cross multiply
    807,500.40x = 1,211,255.18 × 208,420.60
  4. Step 4: Simplify right side
    807,500.40x = 252,450,531,368.71
  5. Step 5: Solve for x
    x = 252,450,531,368.71/807,500.40
  6. Step 6: Final answer
    x = 312,632.08

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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.