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Finding the Fourth Proportional to 370,791.72, 511,718.79 and 209,648.34

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Solution

The fourth proportional to 370,791.72, 511,718.79 and 209,648.34 is: 289,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,791.72 : 511,718.79 = 209,648.34 : x
  2. Step 2: Convert to fraction form
    370,791.72/511,718.79 = 209,648.34/x
  3. Step 3: Cross multiply
    370,791.72x = 511,718.79 × 209,648.34
  4. Step 4: Simplify right side
    370,791.72x = 107,280,994,870.31
  5. Step 5: Solve for x
    x = 107,280,994,870.31/370,791.72
  6. Step 6: Final answer
    x = 289,329.53

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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.