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Finding the Fourth Proportional to 304,393.11, 420,128.70 and 177,085.41

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Solution

The fourth proportional to 304,393.11, 420,128.70 and 177,085.41 is: 244,416.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,393.11 : 420,128.70 = 177,085.41 : x
  2. Step 2: Convert to fraction form
    304,393.11/420,128.70 = 177,085.41/x
  3. Step 3: Cross multiply
    304,393.11x = 420,128.70 × 177,085.41
  4. Step 4: Simplify right side
    304,393.11x = 74,398,663,092.27
  5. Step 5: Solve for x
    x = 74,398,663,092.27/304,393.11
  6. Step 6: Final answer
    x = 244,416.38

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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.