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Finding the Fourth Proportional to 320,858.52, 442,901.56 and 186,722.52

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Solution

The fourth proportional to 320,858.52, 442,901.56 and 186,722.52 is: 257,745.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,858.52 : 442,901.56 = 186,722.52 : x
  2. Step 2: Convert to fraction form
    320,858.52/442,901.56 = 186,722.52/x
  3. Step 3: Cross multiply
    320,858.52x = 442,901.56 × 186,722.52
  4. Step 4: Simplify right side
    320,858.52x = 82,699,695,395.13
  5. Step 5: Solve for x
    x = 82,699,695,395.13/320,858.52
  6. Step 6: Final answer
    x = 257,745.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.