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Finding the Fourth Proportional to 310,676.99, 429,966.83 and 303,224.78

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Solution

The fourth proportional to 310,676.99, 429,966.83 and 303,224.78 is: 419,653.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,676.99 : 429,966.83 = 303,224.78 : x
  2. Step 2: Convert to fraction form
    310,676.99/429,966.83 = 303,224.78/x
  3. Step 3: Cross multiply
    310,676.99x = 429,966.83 × 303,224.78
  4. Step 4: Simplify right side
    310,676.99x = 130,376,599,267.03
  5. Step 5: Solve for x
    x = 130,376,599,267.03/310,676.99
  6. Step 6: Final answer
    x = 419,653.23

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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.