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Finding the Fourth Proportional to 351,359.74, 485,693.62 and 313,494.58

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Solution

The fourth proportional to 351,359.74, 485,693.62 and 313,494.58 is: 433,351.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,359.74 : 485,693.62 = 313,494.58 : x
  2. Step 2: Convert to fraction form
    351,359.74/485,693.62 = 313,494.58/x
  3. Step 3: Cross multiply
    351,359.74x = 485,693.62 × 313,494.58
  4. Step 4: Simplify right side
    351,359.74x = 152,262,317,410.58
  5. Step 5: Solve for x
    x = 152,262,317,410.58/351,359.74
  6. Step 6: Final answer
    x = 433,351.63

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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.