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Finding the Fourth Proportional to 329,398.72, 454,403.28 and 208,336.12

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Solution

The fourth proportional to 329,398.72, 454,403.28 and 208,336.12 is: 287,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,398.72 : 454,403.28 = 208,336.12 : x
  2. Step 2: Convert to fraction form
    329,398.72/454,403.28 = 208,336.12/x
  3. Step 3: Cross multiply
    329,398.72x = 454,403.28 × 208,336.12
  4. Step 4: Simplify right side
    329,398.72x = 94,668,616,270.47
  5. Step 5: Solve for x
    x = 94,668,616,270.47/329,398.72
  6. Step 6: Final answer
    x = 287,398.25

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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.