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Finding the Fourth Proportional to 561,768.42, 775,240.28 and 307,119.61

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Solution

The fourth proportional to 561,768.42, 775,240.28 and 307,119.61 is: 423,824.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,768.42 : 775,240.28 = 307,119.61 : x
  2. Step 2: Convert to fraction form
    561,768.42/775,240.28 = 307,119.61/x
  3. Step 3: Cross multiply
    561,768.42x = 775,240.28 × 307,119.61
  4. Step 4: Simplify right side
    561,768.42x = 238,091,488,573.69
  5. Step 5: Solve for x
    x = 238,091,488,573.69/561,768.42
  6. Step 6: Final answer
    x = 423,824.98

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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.