Home / 309,106.08-426,530.88-173,121.12

Finding the Fourth Proportional to 309,106.08, 426,530.88 and 173,121.12

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Solution

The fourth proportional to 309,106.08, 426,530.88 and 173,121.12 is: 238,887.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,106.08 : 426,530.88 = 173,121.12 : x
  2. Step 2: Convert to fraction form
    309,106.08/426,530.88 = 173,121.12/x
  3. Step 3: Cross multiply
    309,106.08x = 426,530.88 × 173,121.12
  4. Step 4: Simplify right side
    309,106.08x = 73,841,503,660.19
  5. Step 5: Solve for x
    x = 73,841,503,660.19/309,106.08
  6. Step 6: Final answer
    x = 238,887.26

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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.