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Finding the Fourth Proportional to 388,327.84, 535,820.88 and 218,525.92

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Solution

The fourth proportional to 388,327.84, 535,820.88 and 218,525.92 is: 301,525.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,327.84 : 535,820.88 = 218,525.92 : x
  2. Step 2: Convert to fraction form
    388,327.84/535,820.88 = 218,525.92/x
  3. Step 3: Cross multiply
    388,327.84x = 535,820.88 × 218,525.92
  4. Step 4: Simplify right side
    388,327.84x = 117,090,750,757.21
  5. Step 5: Solve for x
    x = 117,090,750,757.21/388,327.84
  6. Step 6: Final answer
    x = 301,525.51

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1.5x scale

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.