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Finding the Fourth Proportional to 370,555.32, 511,368.12 and 200,789.76

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Solution

The fourth proportional to 370,555.32, 511,368.12 and 200,789.76 is: 277,090.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,555.32 : 511,368.12 = 200,789.76 : x
  2. Step 2: Convert to fraction form
    370,555.32/511,368.12 = 200,789.76/x
  3. Step 3: Cross multiply
    370,555.32x = 511,368.12 × 200,789.76
  4. Step 4: Simplify right side
    370,555.32x = 102,677,482,086.45
  5. Step 5: Solve for x
    x = 102,677,482,086.45/370,555.32
  6. Step 6: Final answer
    x = 277,090.83

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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.