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Finding the Fourth Proportional to 255,969.48, 353,073.42 and 155,367.48

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Solution

The fourth proportional to 255,969.48, 353,073.42 and 155,367.48 is: 214,307.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,969.48 : 353,073.42 = 155,367.48 : x
  2. Step 2: Convert to fraction form
    255,969.48/353,073.42 = 155,367.48/x
  3. Step 3: Cross multiply
    255,969.48x = 353,073.42 × 155,367.48
  4. Step 4: Simplify right side
    255,969.48x = 54,856,127,520.38
  5. Step 5: Solve for x
    x = 54,856,127,520.38/255,969.48
  6. Step 6: Final answer
    x = 214,307.30

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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.