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Finding the Fourth Proportional to 393,013.68, 589,027.23 and 168,109.77

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Solution

The fourth proportional to 393,013.68, 589,027.23 and 168,109.77 is: 251,953.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,013.68 : 589,027.23 = 168,109.77 : x
  2. Step 2: Convert to fraction form
    393,013.68/589,027.23 = 168,109.77/x
  3. Step 3: Cross multiply
    393,013.68x = 589,027.23 × 168,109.77
  4. Step 4: Simplify right side
    393,013.68x = 99,021,232,159.04
  5. Step 5: Solve for x
    x = 99,021,232,159.04/393,013.68
  6. Step 6: Final answer
    x = 251,953.65

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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.