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Finding the Fourth Proportional to 388,141.03, 535,587.96 and 216,015.94

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Solution

The fourth proportional to 388,141.03, 535,587.96 and 216,015.94 is: 298,076.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,141.03 : 535,587.96 = 216,015.94 : x
  2. Step 2: Convert to fraction form
    388,141.03/535,587.96 = 216,015.94/x
  3. Step 3: Cross multiply
    388,141.03x = 535,587.96 × 216,015.94
  4. Step 4: Simplify right side
    388,141.03x = 115,695,536,632.08
  5. Step 5: Solve for x
    x = 115,695,536,632.08/388,141.03
  6. Step 6: Final answer
    x = 298,076.03

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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.