Home / 370,485.23-511,270.12-200,719.35

Finding the Fourth Proportional to 370,485.23, 511,270.12 and 200,719.35

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Solution

The fourth proportional to 370,485.23, 511,270.12 and 200,719.35 is: 276,992.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,485.23 : 511,270.12 = 200,719.35 : x
  2. Step 2: Convert to fraction form
    370,485.23/511,270.12 = 200,719.35/x
  3. Step 3: Cross multiply
    370,485.23x = 511,270.12 × 200,719.35
  4. Step 4: Simplify right side
    370,485.23x = 102,621,806,937.20
  5. Step 5: Solve for x
    x = 102,621,806,937.20/370,485.23
  6. Step 6: Final answer
    x = 276,992.98

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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.