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Finding the Fourth Proportional to 304,830.20, 420,661.12 and 168,863.72

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Solution

The fourth proportional to 304,830.20, 420,661.12 and 168,863.72 is: 233,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,830.20 : 420,661.12 = 168,863.72 : x
  2. Step 2: Convert to fraction form
    304,830.20/420,661.12 = 168,863.72/x
  3. Step 3: Cross multiply
    304,830.20x = 420,661.12 × 168,863.72
  4. Step 4: Simplify right side
    304,830.20x = 71,034,401,582.57
  5. Step 5: Solve for x
    x = 71,034,401,582.57/304,830.20
  6. Step 6: Final answer
    x = 233,029.41

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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.