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Finding the Fourth Proportional to 370,520.10, 511,311.06 and 209,371.68

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Solution

The fourth proportional to 370,520.10, 511,311.06 and 209,371.68 is: 288,929.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,520.10 : 511,311.06 = 209,371.68 : x
  2. Step 2: Convert to fraction form
    370,520.10/511,311.06 = 209,371.68/x
  3. Step 3: Cross multiply
    370,520.10x = 511,311.06 × 209,371.68
  4. Step 4: Simplify right side
    370,520.10x = 107,054,055,634.78
  5. Step 5: Solve for x
    x = 107,054,055,634.78/370,520.10
  6. Step 6: Final answer
    x = 288,929.14

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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.