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Finding the Fourth Proportional to 304,388.91, 420,020.71 and 168,404.90

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Solution

The fourth proportional to 304,388.91, 420,020.71 and 168,404.90 is: 232,378.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,388.91 : 420,020.71 = 168,404.90 : x
  2. Step 2: Convert to fraction form
    304,388.91/420,020.71 = 168,404.90/x
  3. Step 3: Cross multiply
    304,388.91x = 420,020.71 × 168,404.90
  4. Step 4: Simplify right side
    304,388.91x = 70,733,543,144.36
  5. Step 5: Solve for x
    x = 70,733,543,144.36/304,388.91
  6. Step 6: Final answer
    x = 232,378.84

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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.