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Finding the Fourth Proportional to 255,973.48, 353,078.94 and 155,371.48

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Solution

The fourth proportional to 255,973.48, 353,078.94 and 155,371.48 is: 214,312.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,973.48 : 353,078.94 = 155,371.48 : x
  2. Step 2: Convert to fraction form
    255,973.48/353,078.94 = 155,371.48/x
  3. Step 3: Cross multiply
    255,973.48x = 353,078.94 × 155,371.48
  4. Step 4: Simplify right side
    255,973.48x = 54,858,397,464.63
  5. Step 5: Solve for x
    x = 54,858,397,464.63/255,973.48
  6. Step 6: Final answer
    x = 214,312.82

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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.