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Finding the Fourth Proportional to 488,311.40, 732,685.80 and 221,934.80

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Solution

The fourth proportional to 488,311.40, 732,685.80 and 221,934.80 is: 333,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,311.40 : 732,685.80 = 221,934.80 : x
  2. Step 2: Convert to fraction form
    488,311.40/732,685.80 = 221,934.80/x
  3. Step 3: Cross multiply
    488,311.40x = 732,685.80 × 221,934.80
  4. Step 4: Simplify right side
    488,311.40x = 162,608,476,485.84
  5. Step 5: Solve for x
    x = 162,608,476,485.84/488,311.40
  6. Step 6: Final answer
    x = 333,001.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.