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Finding the Fourth Proportional to 388,102.71, 581,461.50 and 210,496.44

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Solution

The fourth proportional to 388,102.71, 581,461.50 and 210,496.44 is: 315,369.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,102.71 : 581,461.50 = 210,496.44 : x
  2. Step 2: Convert to fraction form
    388,102.71/581,461.50 = 210,496.44/x
  3. Step 3: Cross multiply
    388,102.71x = 581,461.50 × 210,496.44
  4. Step 4: Simplify right side
    388,102.71x = 122,395,575,747.06
  5. Step 5: Solve for x
    x = 122,395,575,747.06/388,102.71
  6. Step 6: Final answer
    x = 315,369.03

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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.