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Finding the Fourth Proportional to 370,474.80, 511,255.76 and 200,708.93

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Solution

The fourth proportional to 370,474.80, 511,255.76 and 200,708.93 is: 276,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,474.80 : 511,255.76 = 200,708.93 : x
  2. Step 2: Convert to fraction form
    370,474.80/511,255.76 = 200,708.93/x
  3. Step 3: Cross multiply
    370,474.80x = 511,255.76 × 200,708.93
  4. Step 4: Simplify right side
    370,474.80x = 102,613,592,986.11
  5. Step 5: Solve for x
    x = 102,613,592,986.11/370,474.80
  6. Step 6: Final answer
    x = 276,978.60

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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.