Home / 379,449.03-523,639.85-209,683.16

Finding the Fourth Proportional to 379,449.03, 523,639.85 and 209,683.16

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Solution

The fourth proportional to 379,449.03, 523,639.85 and 209,683.16 is: 289,362.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,449.03 : 523,639.85 = 209,683.16 : x
  2. Step 2: Convert to fraction form
    379,449.03/523,639.85 = 209,683.16/x
  3. Step 3: Cross multiply
    379,449.03x = 523,639.85 × 209,683.16
  4. Step 4: Simplify right side
    379,449.03x = 109,798,458,449.93
  5. Step 5: Solve for x
    x = 109,798,458,449.93/379,449.03
  6. Step 6: Final answer
    x = 289,362.87

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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.