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Finding the Fourth Proportional to 217,038.30, 325,643.16 and 67,290.36

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Solution

The fourth proportional to 217,038.30, 325,643.16 and 67,290.36 is: 100,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,038.30 : 325,643.16 = 67,290.36 : x
  2. Step 2: Convert to fraction form
    217,038.30/325,643.16 = 67,290.36/x
  3. Step 3: Cross multiply
    217,038.30x = 325,643.16 × 67,290.36
  4. Step 4: Simplify right side
    217,038.30x = 21,912,645,467.94
  5. Step 5: Solve for x
    x = 21,912,645,467.94/217,038.30
  6. Step 6: Final answer
    x = 100,962.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.