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Finding the Fourth Proportional to 290,379.09, 400,679.82 and 163,030.08

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Solution

The fourth proportional to 290,379.09, 400,679.82 and 163,030.08 is: 224,957.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,379.09 : 400,679.82 = 163,030.08 : x
  2. Step 2: Convert to fraction form
    290,379.09/400,679.82 = 163,030.08/x
  3. Step 3: Cross multiply
    290,379.09x = 400,679.82 × 163,030.08
  4. Step 4: Simplify right side
    290,379.09x = 65,322,863,108.99
  5. Step 5: Solve for x
    x = 65,322,863,108.99/290,379.09
  6. Step 6: Final answer
    x = 224,957.19

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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.