Home / 298,075.28-447,116.16-87,717.20

Finding the Fourth Proportional to 298,075.28, 447,116.16 and 87,717.20

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Solution

The fourth proportional to 298,075.28, 447,116.16 and 87,717.20 is: 131,576.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,075.28 : 447,116.16 = 87,717.20 : x
  2. Step 2: Convert to fraction form
    298,075.28/447,116.16 = 87,717.20/x
  3. Step 3: Cross multiply
    298,075.28x = 447,116.16 × 87,717.20
  4. Step 4: Simplify right side
    298,075.28x = 39,219,777,629.95
  5. Step 5: Solve for x
    x = 39,219,777,629.95/298,075.28
  6. Step 6: Final answer
    x = 131,576.75

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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.