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Finding the Fourth Proportional to 449,222.01, 619,980.74 and 255,676.78

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Solution

The fourth proportional to 449,222.01, 619,980.74 and 255,676.78 is: 352,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,222.01 : 619,980.74 = 255,676.78 : x
  2. Step 2: Convert to fraction form
    449,222.01/619,980.74 = 255,676.78/x
  3. Step 3: Cross multiply
    449,222.01x = 619,980.74 × 255,676.78
  4. Step 4: Simplify right side
    449,222.01x = 158,514,679,265.22
  5. Step 5: Solve for x
    x = 158,514,679,265.22/449,222.01
  6. Step 6: Final answer
    x = 352,864.90

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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.