Home / 431,271.30-647,002.14-131,775.28

Finding the Fourth Proportional to 431,271.30, 647,002.14 and 131,775.28

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Solution

The fourth proportional to 431,271.30, 647,002.14 and 131,775.28 is: 197,692.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,271.30 : 647,002.14 = 131,775.28 : x
  2. Step 2: Convert to fraction form
    431,271.30/647,002.14 = 131,775.28/x
  3. Step 3: Cross multiply
    431,271.30x = 647,002.14 × 131,775.28
  4. Step 4: Simplify right side
    431,271.30x = 85,258,888,159.10
  5. Step 5: Solve for x
    x = 85,258,888,159.10/431,271.30
  6. Step 6: Final answer
    x = 197,692.01

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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.