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Finding the Fourth Proportional to 303,113.42, 418,279.32 and 188,389.12

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Solution

The fourth proportional to 303,113.42, 418,279.32 and 188,389.12 is: 259,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,113.42 : 418,279.32 = 188,389.12 : x
  2. Step 2: Convert to fraction form
    303,113.42/418,279.32 = 188,389.12/x
  3. Step 3: Cross multiply
    303,113.42x = 418,279.32 × 188,389.12
  4. Step 4: Simplify right side
    303,113.42x = 78,799,273,009.00
  5. Step 5: Solve for x
    x = 78,799,273,009.00/303,113.42
  6. Step 6: Final answer
    x = 259,966.30

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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.