Home / 304,736.40-420,328.10-209,077.02

Finding the Fourth Proportional to 304,736.40, 420,328.10 and 209,077.02

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Solution

The fourth proportional to 304,736.40, 420,328.10 and 209,077.02 is: 288,383.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,736.40 : 420,328.10 = 209,077.02 : x
  2. Step 2: Convert to fraction form
    304,736.40/420,328.10 = 209,077.02/x
  3. Step 3: Cross multiply
    304,736.40x = 420,328.10 × 209,077.02
  4. Step 4: Simplify right side
    304,736.40x = 87,880,947,092.95
  5. Step 5: Solve for x
    x = 87,880,947,092.95/304,736.40
  6. Step 6: Final answer
    x = 288,383.49

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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.