Home / 209,217.30-288,720.91-113,724

Finding the Fourth Proportional to 209,217.30, 288,720.91 and 113,724

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Solution

The fourth proportional to 209,217.30, 288,720.91 and 113,724 is: 156,939.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,217.30 : 288,720.91 = 113,724 : x
  2. Step 2: Convert to fraction form
    209,217.30/288,720.91 = 113,724/x
  3. Step 3: Cross multiply
    209,217.30x = 288,720.91 × 113,724
  4. Step 4: Simplify right side
    209,217.30x = 32,834,496,271.30
  5. Step 5: Solve for x
    x = 32,834,496,271.30/209,217.30
  6. Step 6: Final answer
    x = 156,939.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.