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Finding the Fourth Proportional to 438,858.81, 658,288.16 and 154,482.39

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Solution

The fourth proportional to 438,858.81, 658,288.16 and 154,482.39 is: 231,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,858.81 : 658,288.16 = 154,482.39 : x
  2. Step 2: Convert to fraction form
    438,858.81/658,288.16 = 154,482.39/x
  3. Step 3: Cross multiply
    438,858.81x = 658,288.16 × 154,482.39
  4. Step 4: Simplify right side
    438,858.81x = 101,693,927,493.09
  5. Step 5: Solve for x
    x = 101,693,927,493.09/438,858.81
  6. Step 6: Final answer
    x = 231,723.56

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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.