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Finding the Fourth Proportional to 255,433.79, 352,509.55 and 142,256.54

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Solution

The fourth proportional to 255,433.79, 352,509.55 and 142,256.54 is: 196,320.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,433.79 : 352,509.55 = 142,256.54 : x
  2. Step 2: Convert to fraction form
    255,433.79/352,509.55 = 142,256.54/x
  3. Step 3: Cross multiply
    255,433.79x = 352,509.55 × 142,256.54
  4. Step 4: Simplify right side
    255,433.79x = 50,146,789,425.59
  5. Step 5: Solve for x
    x = 50,146,789,425.59/255,433.79
  6. Step 6: Final answer
    x = 196,320.11

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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.