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Finding the Fourth Proportional to 388,250.33, 535,784.36 and 218,484.45

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Solution

The fourth proportional to 388,250.33, 535,784.36 and 218,484.45 is: 301,507.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,250.33 : 535,784.36 = 218,484.45 : x
  2. Step 2: Convert to fraction form
    388,250.33/535,784.36 = 218,484.45/x
  3. Step 3: Cross multiply
    388,250.33x = 535,784.36 × 218,484.45
  4. Step 4: Simplify right side
    388,250.33x = 117,060,550,120.78
  5. Step 5: Solve for x
    x = 117,060,550,120.78/388,250.33
  6. Step 6: Final answer
    x = 301,507.93

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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.