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Finding the Fourth Proportional to 370,398.72, 511,061.76 and 219,469.44

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Solution

The fourth proportional to 370,398.72, 511,061.76 and 219,469.44 is: 302,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,398.72 : 511,061.76 = 219,469.44 : x
  2. Step 2: Convert to fraction form
    370,398.72/511,061.76 = 219,469.44/x
  3. Step 3: Cross multiply
    370,398.72x = 511,061.76 × 219,469.44
  4. Step 4: Simplify right side
    370,398.72x = 112,162,438,272.61
  5. Step 5: Solve for x
    x = 112,162,438,272.61/370,398.72
  6. Step 6: Final answer
    x = 302,815.40

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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.