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Finding the Fourth Proportional to 386,499.15, 579,751.81 and 158,736.08

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Solution

The fourth proportional to 386,499.15, 579,751.81 and 158,736.08 is: 238,105.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,499.15 : 579,751.81 = 158,736.08 : x
  2. Step 2: Convert to fraction form
    386,499.15/579,751.81 = 158,736.08/x
  3. Step 3: Cross multiply
    386,499.15x = 579,751.81 × 158,736.08
  4. Step 4: Simplify right side
    386,499.15x = 92,027,528,570.77
  5. Step 5: Solve for x
    x = 92,027,528,570.77/386,499.15
  6. Step 6: Final answer
    x = 238,105.39

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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.