Home / 347,612.18-479,457-319,023.99

Finding the Fourth Proportional to 347,612.18, 479,457 and 319,023.99

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Solution

The fourth proportional to 347,612.18, 479,457 and 319,023.99 is: 440,025.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,612.18 : 479,457 = 319,023.99 : x
  2. Step 2: Convert to fraction form
    347,612.18/479,457 = 319,023.99/x
  3. Step 3: Cross multiply
    347,612.18x = 479,457 × 319,023.99
  4. Step 4: Simplify right side
    347,612.18x = 152,958,285,173.43
  5. Step 5: Solve for x
    x = 152,958,285,173.43/347,612.18
  6. Step 6: Final answer
    x = 440,025.68

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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.