Home / 431,788.16-647,825.53-132,271.67

Finding the Fourth Proportional to 431,788.16, 647,825.53 and 132,271.67

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Solution

The fourth proportional to 431,788.16, 647,825.53 and 132,271.67 is: 198,451.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,788.16 : 647,825.53 = 132,271.67 : x
  2. Step 2: Convert to fraction form
    431,788.16/647,825.53 = 132,271.67/x
  3. Step 3: Cross multiply
    431,788.16x = 647,825.53 × 132,271.67
  4. Step 4: Simplify right side
    431,788.16x = 85,688,964,721.74
  5. Step 5: Solve for x
    x = 85,688,964,721.74/431,788.16
  6. Step 6: Final answer
    x = 198,451.40

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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.