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Finding the Fourth Proportional to 388,094.51, 535,557.29 and 218,295.83

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Solution

The fourth proportional to 388,094.51, 535,557.29 and 218,295.83 is: 301,240.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,094.51 : 535,557.29 = 218,295.83 : x
  2. Step 2: Convert to fraction form
    388,094.51/535,557.29 = 218,295.83/x
  3. Step 3: Cross multiply
    388,094.51x = 535,557.29 × 218,295.83
  4. Step 4: Simplify right side
    388,094.51x = 116,909,919,363.84
  5. Step 5: Solve for x
    x = 116,909,919,363.84/388,094.51
  6. Step 6: Final answer
    x = 301,240.85

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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.