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Finding the Fourth Proportional to 388,233.20, 535,761.58 and 218,467.48

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Solution

The fourth proportional to 388,233.20, 535,761.58 and 218,467.48 is: 301,484.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,233.20 : 535,761.58 = 218,467.48 : x
  2. Step 2: Convert to fraction form
    388,233.20/535,761.58 = 218,467.48/x
  3. Step 3: Cross multiply
    388,233.20x = 535,761.58 × 218,467.48
  4. Step 4: Simplify right side
    388,233.20x = 117,046,482,263.42
  5. Step 5: Solve for x
    x = 117,046,482,263.42/388,233.20
  6. Step 6: Final answer
    x = 301,484.99

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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.