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Finding the Fourth Proportional to 480,858.61, 721,353.54 and 200,310.25

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Solution

The fourth proportional to 480,858.61, 721,353.54 and 200,310.25 is: 300,492.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,858.61 : 721,353.54 = 200,310.25 : x
  2. Step 2: Convert to fraction form
    480,858.61/721,353.54 = 200,310.25/x
  3. Step 3: Cross multiply
    480,858.61x = 721,353.54 × 200,310.25
  4. Step 4: Simplify right side
    480,858.61x = 144,494,506,934.23
  5. Step 5: Solve for x
    x = 144,494,506,934.23/480,858.61
  6. Step 6: Final answer
    x = 300,492.71

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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.