Home / 660,200.36-989,928.74-210,815.60

Finding the Fourth Proportional to 660,200.36, 989,928.74 and 210,815.60

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Solution

The fourth proportional to 660,200.36, 989,928.74 and 210,815.60 is: 316,104.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,200.36 : 989,928.74 = 210,815.60 : x
  2. Step 2: Convert to fraction form
    660,200.36/989,928.74 = 210,815.60/x
  3. Step 3: Cross multiply
    660,200.36x = 989,928.74 × 210,815.60
  4. Step 4: Simplify right side
    660,200.36x = 208,692,416,857.74
  5. Step 5: Solve for x
    x = 208,692,416,857.74/660,200.36
  6. Step 6: Final answer
    x = 316,104.67

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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.