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Finding the Fourth Proportional to 555,039.71, 831,889.10 and 270,303.58

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Solution

The fourth proportional to 555,039.71, 831,889.10 and 270,303.58 is: 405,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,039.71 : 831,889.10 = 270,303.58 : x
  2. Step 2: Convert to fraction form
    555,039.71/831,889.10 = 270,303.58/x
  3. Step 3: Cross multiply
    555,039.71x = 831,889.10 × 270,303.58
  4. Step 4: Simplify right side
    555,039.71x = 224,862,603,608.60
  5. Step 5: Solve for x
    x = 224,862,603,608.60/555,039.71
  6. Step 6: Final answer
    x = 405,128.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.