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Finding the Fourth Proportional to 347,015.54, 478,850.21 and 201,822.67

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Solution

The fourth proportional to 347,015.54, 478,850.21 and 201,822.67 is: 278,497.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,015.54 : 478,850.21 = 201,822.67 : x
  2. Step 2: Convert to fraction form
    347,015.54/478,850.21 = 201,822.67/x
  3. Step 3: Cross multiply
    347,015.54x = 478,850.21 × 201,822.67
  4. Step 4: Simplify right side
    347,015.54x = 96,642,824,508.90
  5. Step 5: Solve for x
    x = 96,642,824,508.90/347,015.54
  6. Step 6: Final answer
    x = 278,497.11

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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.