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Finding the Fourth Proportional to 302,934.60, 454,401.90 and 208,456.20

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Solution

The fourth proportional to 302,934.60, 454,401.90 and 208,456.20 is: 312,684.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,934.60 : 454,401.90 = 208,456.20 : x
  2. Step 2: Convert to fraction form
    302,934.60/454,401.90 = 208,456.20/x
  3. Step 3: Cross multiply
    302,934.60x = 454,401.90 × 208,456.20
  4. Step 4: Simplify right side
    302,934.60x = 94,722,893,346.78
  5. Step 5: Solve for x
    x = 94,722,893,346.78/302,934.60
  6. Step 6: Final answer
    x = 312,684.30

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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.