Home / 209,132.40-288,603-113,640.24

Finding the Fourth Proportional to 209,132.40, 288,603 and 113,640.24

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Solution

The fourth proportional to 209,132.40, 288,603 and 113,640.24 is: 156,823.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,132.40 : 288,603 = 113,640.24 : x
  2. Step 2: Convert to fraction form
    209,132.40/288,603 = 113,640.24/x
  3. Step 3: Cross multiply
    209,132.40x = 288,603 × 113,640.24
  4. Step 4: Simplify right side
    209,132.40x = 32,796,914,184.72
  5. Step 5: Solve for x
    x = 32,796,914,184.72/209,132.40
  6. Step 6: Final answer
    x = 156,823.69

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1.5x scale

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.