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Finding the Fourth Proportional to 449,182.76, 619,133.51 and 318,404.21

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Solution

The fourth proportional to 449,182.76, 619,133.51 and 318,404.21 is: 438,874.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,182.76 : 619,133.51 = 318,404.21 : x
  2. Step 2: Convert to fraction form
    449,182.76/619,133.51 = 318,404.21/x
  3. Step 3: Cross multiply
    449,182.76x = 619,133.51 × 318,404.21
  4. Step 4: Simplify right side
    449,182.76x = 197,134,713,836.42
  5. Step 5: Solve for x
    x = 197,134,713,836.42/449,182.76
  6. Step 6: Final answer
    x = 438,874.18

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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.