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Finding the Fourth Proportional to 422,653.04, 583,321 and 261,560

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Solution

The fourth proportional to 422,653.04, 583,321 and 261,560 is: 360,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,653.04 : 583,321 = 261,560 : x
  2. Step 2: Convert to fraction form
    422,653.04/583,321 = 261,560/x
  3. Step 3: Cross multiply
    422,653.04x = 583,321 × 261,560
  4. Step 4: Simplify right side
    422,653.04x = 152,573,440,760
  5. Step 5: Solve for x
    x = 152,573,440,760/422,653.04
  6. Step 6: Final answer
    x = 360,989.81

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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.