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Finding the Fourth Proportional to 290,776.59, 401,290.07 and 163,460.39

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Solution

The fourth proportional to 290,776.59, 401,290.07 and 163,460.39 is: 225,585.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,776.59 : 401,290.07 = 163,460.39 : x
  2. Step 2: Convert to fraction form
    290,776.59/401,290.07 = 163,460.39/x
  3. Step 3: Cross multiply
    290,776.59x = 401,290.07 × 163,460.39
  4. Step 4: Simplify right side
    290,776.59x = 65,595,028,521.58
  5. Step 5: Solve for x
    x = 65,595,028,521.58/290,776.59
  6. Step 6: Final answer
    x = 225,585.66

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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.