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Finding the Fourth Proportional to 305,300.84, 421,318.08 and 169,348.14

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Solution

The fourth proportional to 305,300.84, 421,318.08 and 169,348.14 is: 233,702.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,300.84 : 421,318.08 = 169,348.14 : x
  2. Step 2: Convert to fraction form
    305,300.84/421,318.08 = 169,348.14/x
  3. Step 3: Cross multiply
    305,300.84x = 421,318.08 × 169,348.14
  4. Step 4: Simplify right side
    305,300.84x = 71,349,433,196.37
  5. Step 5: Solve for x
    x = 71,349,433,196.37/305,300.84
  6. Step 6: Final answer
    x = 233,702.06

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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.