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Finding the Fourth Proportional to 393,012.68, 589,025.73 and 168,108.77

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Solution

The fourth proportional to 393,012.68, 589,025.73 and 168,108.77 is: 251,952.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,012.68 : 589,025.73 = 168,108.77 : x
  2. Step 2: Convert to fraction form
    393,012.68/589,025.73 = 168,108.77/x
  3. Step 3: Cross multiply
    393,012.68x = 589,025.73 × 168,108.77
  4. Step 4: Simplify right side
    393,012.68x = 99,020,390,968.65
  5. Step 5: Solve for x
    x = 99,020,390,968.65/393,012.68
  6. Step 6: Final answer
    x = 251,952.15

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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.