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Finding the Fourth Proportional to 291,648.60, 402,356.70 and 178,536.96

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Solution

The fourth proportional to 291,648.60, 402,356.70 and 178,536.96 is: 246,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,648.60 : 402,356.70 = 178,536.96 : x
  2. Step 2: Convert to fraction form
    291,648.60/402,356.70 = 178,536.96/x
  3. Step 3: Cross multiply
    291,648.60x = 402,356.70 × 178,536.96
  4. Step 4: Simplify right side
    291,648.60x = 71,835,542,053.63
  5. Step 5: Solve for x
    x = 71,835,542,053.63/291,648.60
  6. Step 6: Final answer
    x = 246,308.54

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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.