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Finding the Fourth Proportional to 283,179.51, 390,790.47 and 155,858.04

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Solution

The fourth proportional to 283,179.51, 390,790.47 and 155,858.04 is: 215,085.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,179.51 : 390,790.47 = 155,858.04 : x
  2. Step 2: Convert to fraction form
    283,179.51/390,790.47 = 155,858.04/x
  3. Step 3: Cross multiply
    283,179.51x = 390,790.47 × 155,858.04
  4. Step 4: Simplify right side
    283,179.51x = 60,907,836,704.88
  5. Step 5: Solve for x
    x = 60,907,836,704.88/283,179.51
  6. Step 6: Final answer
    x = 215,085.61

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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.