Home / 209,715.60-314,617.08-69,485.20

Finding the Fourth Proportional to 209,715.60, 314,617.08 and 69,485.20

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Solution

The fourth proportional to 209,715.60, 314,617.08 and 69,485.20 is: 104,242.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,715.60 : 314,617.08 = 69,485.20 : x
  2. Step 2: Convert to fraction form
    209,715.60/314,617.08 = 69,485.20/x
  3. Step 3: Cross multiply
    209,715.60x = 314,617.08 × 69,485.20
  4. Step 4: Simplify right side
    209,715.60x = 21,861,230,727.22
  5. Step 5: Solve for x
    x = 21,861,230,727.22/209,715.60
  6. Step 6: Final answer
    x = 104,242.27

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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.