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Finding the Fourth Proportional to 305,300.51, 420,827.90 and 240,664.34

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Solution

The fourth proportional to 305,300.51, 420,827.90 and 240,664.34 is: 331,733.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,300.51 : 420,827.90 = 240,664.34 : x
  2. Step 2: Convert to fraction form
    305,300.51/420,827.90 = 240,664.34/x
  3. Step 3: Cross multiply
    305,300.51x = 420,827.90 × 240,664.34
  4. Step 4: Simplify right side
    305,300.51x = 101,278,265,499.63
  5. Step 5: Solve for x
    x = 101,278,265,499.63/305,300.51
  6. Step 6: Final answer
    x = 331,733.04

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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.