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Finding the Fourth Proportional to 480,859.61, 721,355.04 and 200,311.25

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Solution

The fourth proportional to 480,859.61, 721,355.04 and 200,311.25 is: 300,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,859.61 : 721,355.04 = 200,311.25 : x
  2. Step 2: Convert to fraction form
    480,859.61/721,355.04 = 200,311.25/x
  3. Step 3: Cross multiply
    480,859.61x = 721,355.04 × 200,311.25
  4. Step 4: Simplify right side
    480,859.61x = 144,495,529,756.20
  5. Step 5: Solve for x
    x = 144,495,529,756.20/480,859.61
  6. Step 6: Final answer
    x = 300,494.21

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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.