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Finding the Fourth Proportional to 317,670.66, 438,399.81 and 190,343.52

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Solution

The fourth proportional to 317,670.66, 438,399.81 and 190,343.52 is: 262,682.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,670.66 : 438,399.81 = 190,343.52 : x
  2. Step 2: Convert to fraction form
    317,670.66/438,399.81 = 190,343.52/x
  3. Step 3: Cross multiply
    317,670.66x = 438,399.81 × 190,343.52
  4. Step 4: Simplify right side
    317,670.66x = 83,446,563,002.73
  5. Step 5: Solve for x
    x = 83,446,563,002.73/317,670.66
  6. Step 6: Final answer
    x = 262,682.63

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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.