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Finding the Fourth Proportional to 561,768.84, 775,243.74 and 307,120.04

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Solution

The fourth proportional to 561,768.84, 775,243.74 and 307,120.04 is: 423,827.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,768.84 : 775,243.74 = 307,120.04 : x
  2. Step 2: Convert to fraction form
    561,768.84/775,243.74 = 307,120.04/x
  3. Step 3: Cross multiply
    561,768.84x = 775,243.74 × 307,120.04
  4. Step 4: Simplify right side
    561,768.84x = 238,092,888,438.55
  5. Step 5: Solve for x
    x = 238,092,888,438.55/561,768.84
  6. Step 6: Final answer
    x = 423,827.15

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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.