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Finding the Fourth Proportional to 290,055.01, 400,269.88 and 160,985.91

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Solution

The fourth proportional to 290,055.01, 400,269.88 and 160,985.91 is: 222,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,055.01 : 400,269.88 = 160,985.91 : x
  2. Step 2: Convert to fraction form
    290,055.01/400,269.88 = 160,985.91/x
  3. Step 3: Cross multiply
    290,055.01x = 400,269.88 × 160,985.91
  4. Step 4: Simplify right side
    290,055.01x = 64,437,809,474.25
  5. Step 5: Solve for x
    x = 64,437,809,474.25/290,055.01
  6. Step 6: Final answer
    x = 222,157.20

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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.