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Finding the Fourth Proportional to 539,015.40, 809,106.30 and 302,819.40

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Solution

The fourth proportional to 539,015.40, 809,106.30 and 302,819.40 is: 454,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,015.40 : 809,106.30 = 302,819.40 : x
  2. Step 2: Convert to fraction form
    539,015.40/809,106.30 = 302,819.40/x
  3. Step 3: Cross multiply
    539,015.40x = 809,106.30 × 302,819.40
  4. Step 4: Simplify right side
    539,015.40x = 245,013,084,302.22
  5. Step 5: Solve for x
    x = 245,013,084,302.22/539,015.40
  6. Step 6: Final answer
    x = 454,556.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.