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Finding the Fourth Proportional to 305,064.97, 421,005.09 and 175,955.41

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Solution

The fourth proportional to 305,064.97, 421,005.09 and 175,955.41 is: 242,827.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,064.97 : 421,005.09 = 175,955.41 : x
  2. Step 2: Convert to fraction form
    305,064.97/421,005.09 = 175,955.41/x
  3. Step 3: Cross multiply
    305,064.97x = 421,005.09 × 175,955.41
  4. Step 4: Simplify right side
    305,064.97x = 74,078,123,223.04
  5. Step 5: Solve for x
    x = 74,078,123,223.04/305,064.97
  6. Step 6: Final answer
    x = 242,827.37

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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.