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Finding the Fourth Proportional to 484,429.50, 668,512.71 and 272,461.50

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Solution

The fourth proportional to 484,429.50, 668,512.71 and 272,461.50 is: 375,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,429.50 : 668,512.71 = 272,461.50 : x
  2. Step 2: Convert to fraction form
    484,429.50/668,512.71 = 272,461.50/x
  3. Step 3: Cross multiply
    484,429.50x = 668,512.71 × 272,461.50
  4. Step 4: Simplify right side
    484,429.50x = 182,143,975,735.67
  5. Step 5: Solve for x
    x = 182,143,975,735.67/484,429.50
  6. Step 6: Final answer
    x = 375,996.87

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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.