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Finding the Fourth Proportional to 518,021.28, 777,075.90 and 144,044.28

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Solution

The fourth proportional to 518,021.28, 777,075.90 and 144,044.28 is: 216,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,021.28 : 777,075.90 = 144,044.28 : x
  2. Step 2: Convert to fraction form
    518,021.28/777,075.90 = 144,044.28/x
  3. Step 3: Cross multiply
    518,021.28x = 777,075.90 × 144,044.28
  4. Step 4: Simplify right side
    518,021.28x = 111,933,338,520.85
  5. Step 5: Solve for x
    x = 111,933,338,520.85/518,021.28
  6. Step 6: Final answer
    x = 216,078.65

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1.5x scale

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.