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Finding the Fourth Proportional to 379,686.76, 524,099.58 and 218,606.01

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Solution

The fourth proportional to 379,686.76, 524,099.58 and 218,606.01 is: 301,752.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,686.76 : 524,099.58 = 218,606.01 : x
  2. Step 2: Convert to fraction form
    379,686.76/524,099.58 = 218,606.01/x
  3. Step 3: Cross multiply
    379,686.76x = 524,099.58 × 218,606.01
  4. Step 4: Simplify right side
    379,686.76x = 114,571,315,241.33
  5. Step 5: Solve for x
    x = 114,571,315,241.33/379,686.76
  6. Step 6: Final answer
    x = 301,752.20

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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.