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Finding the Fourth Proportional to 476,624.46, 714,936.36 and 121,638.60

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Solution

The fourth proportional to 476,624.46, 714,936.36 and 121,638.60 is: 182,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,624.46 : 714,936.36 = 121,638.60 : x
  2. Step 2: Convert to fraction form
    476,624.46/714,936.36 = 121,638.60/x
  3. Step 3: Cross multiply
    476,624.46x = 714,936.36 × 121,638.60
  4. Step 4: Simplify right side
    476,624.46x = 86,963,857,919.50
  5. Step 5: Solve for x
    x = 86,963,857,919.50/476,624.46
  6. Step 6: Final answer
    x = 182,457.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.