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Finding the Fourth Proportional to 255,484.64, 352,579.68 and 142,307.44

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Solution

The fourth proportional to 255,484.64, 352,579.68 and 142,307.44 is: 196,390.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,484.64 : 352,579.68 = 142,307.44 : x
  2. Step 2: Convert to fraction form
    255,484.64/352,579.68 = 142,307.44/x
  3. Step 3: Cross multiply
    255,484.64x = 352,579.68 × 142,307.44
  4. Step 4: Simplify right side
    255,484.64x = 50,174,711,656.82
  5. Step 5: Solve for x
    x = 50,174,711,656.82/255,484.64
  6. Step 6: Final answer
    x = 196,390.33

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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.