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Finding the Fourth Proportional to 290,547.36, 400,884.84 and 169,619.40

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Solution

The fourth proportional to 290,547.36, 400,884.84 and 169,619.40 is: 234,033.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,547.36 : 400,884.84 = 169,619.40 : x
  2. Step 2: Convert to fraction form
    290,547.36/400,884.84 = 169,619.40/x
  3. Step 3: Cross multiply
    290,547.36x = 400,884.84 × 169,619.40
  4. Step 4: Simplify right side
    290,547.36x = 67,997,846,029.90
  5. Step 5: Solve for x
    x = 67,997,846,029.90/290,547.36
  6. Step 6: Final answer
    x = 234,033.60

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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.