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Finding the Fourth Proportional to 282,415.21, 389,735.72 and 155,093.52

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Solution

The fourth proportional to 282,415.21, 389,735.72 and 155,093.52 is: 214,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,415.21 : 389,735.72 = 155,093.52 : x
  2. Step 2: Convert to fraction form
    282,415.21/389,735.72 = 155,093.52/x
  3. Step 3: Cross multiply
    282,415.21x = 389,735.72 × 155,093.52
  4. Step 4: Simplify right side
    282,415.21x = 60,445,484,684.53
  5. Step 5: Solve for x
    x = 60,445,484,684.53/282,415.21
  6. Step 6: Final answer
    x = 214,030.56

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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.