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Finding the Fourth Proportional to 304,633.66, 420,440.88 and 189,930.91

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Solution

The fourth proportional to 304,633.66, 420,440.88 and 189,930.91 is: 262,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,633.66 : 420,440.88 = 189,930.91 : x
  2. Step 2: Convert to fraction form
    304,633.66/420,440.88 = 189,930.91/x
  3. Step 3: Cross multiply
    304,633.66x = 420,440.88 × 189,930.91
  4. Step 4: Simplify right side
    304,633.66x = 79,854,718,939.60
  5. Step 5: Solve for x
    x = 79,854,718,939.60/304,633.66
  6. Step 6: Final answer
    x = 262,133.60

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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.