Home / 370,319.70-511,082.74-209,185.12

Finding the Fourth Proportional to 370,319.70, 511,082.74 and 209,185.12

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Solution

The fourth proportional to 370,319.70, 511,082.74 and 209,185.12 is: 288,698.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,319.70 : 511,082.74 = 209,185.12 : x
  2. Step 2: Convert to fraction form
    370,319.70/511,082.74 = 209,185.12/x
  3. Step 3: Cross multiply
    370,319.70x = 511,082.74 × 209,185.12
  4. Step 4: Simplify right side
    370,319.70x = 106,910,904,296.83
  5. Step 5: Solve for x
    x = 106,910,904,296.83/370,319.70
  6. Step 6: Final answer
    x = 288,698.94

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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.