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Finding the Fourth Proportional to 309,809.21, 427,502.00 and 173,814.86

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Solution

The fourth proportional to 309,809.21, 427,502.00 and 173,814.86 is: 239,845.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,809.21 : 427,502.00 = 173,814.86 : x
  2. Step 2: Convert to fraction form
    309,809.21/427,502.00 = 173,814.86/x
  3. Step 3: Cross multiply
    309,809.21x = 427,502.00 × 173,814.86
  4. Step 4: Simplify right side
    309,809.21x = 74,306,201,783.01
  5. Step 5: Solve for x
    x = 74,306,201,783.01/309,809.21
  6. Step 6: Final answer
    x = 239,845.04

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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.