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Finding the Fourth Proportional to 208,322.01, 287,478.99 and 117,687.33

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Solution

The fourth proportional to 208,322.01, 287,478.99 and 117,687.33 is: 162,405.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,322.01 : 287,478.99 = 117,687.33 : x
  2. Step 2: Convert to fraction form
    208,322.01/287,478.99 = 117,687.33/x
  3. Step 3: Cross multiply
    208,322.01x = 287,478.99 × 117,687.33
  4. Step 4: Simplify right side
    208,322.01x = 33,832,634,764.20
  5. Step 5: Solve for x
    x = 33,832,634,764.20/208,322.01
  6. Step 6: Final answer
    x = 162,405.47

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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.