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Finding the Fourth Proportional to 290,437.89, 400,841.88 and 163,113.48

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Solution

The fourth proportional to 290,437.89, 400,841.88 and 163,113.48 is: 225,117.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,437.89 : 400,841.88 = 163,113.48 : x
  2. Step 2: Convert to fraction form
    290,437.89/400,841.88 = 163,113.48/x
  3. Step 3: Cross multiply
    290,437.89x = 400,841.88 × 163,113.48
  4. Step 4: Simplify right side
    290,437.89x = 65,382,713,976.54
  5. Step 5: Solve for x
    x = 65,382,713,976.54/290,437.89
  6. Step 6: Final answer
    x = 225,117.71

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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.