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Finding the Fourth Proportional to 315,229.26, 435,176.91 and 243,448.14

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Solution

The fourth proportional to 315,229.26, 435,176.91 and 243,448.14 is: 336,082.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,229.26 : 435,176.91 = 243,448.14 : x
  2. Step 2: Convert to fraction form
    315,229.26/435,176.91 = 243,448.14/x
  3. Step 3: Cross multiply
    315,229.26x = 435,176.91 × 243,448.14
  4. Step 4: Simplify right side
    315,229.26x = 105,943,009,310.45
  5. Step 5: Solve for x
    x = 105,943,009,310.45/315,229.26
  6. Step 6: Final answer
    x = 336,082.41

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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.