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Finding the Fourth Proportional to 393,418.16, 589,130.73 and 243,950.36

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Solution

The fourth proportional to 393,418.16, 589,130.73 and 243,950.36 is: 365,307.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,418.16 : 589,130.73 = 243,950.36 : x
  2. Step 2: Convert to fraction form
    393,418.16/589,130.73 = 243,950.36/x
  3. Step 3: Cross multiply
    393,418.16x = 589,130.73 × 243,950.36
  4. Step 4: Simplify right side
    393,418.16x = 143,718,653,670.56
  5. Step 5: Solve for x
    x = 143,718,653,670.56/393,418.16
  6. Step 6: Final answer
    x = 365,307.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.