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Finding the Fourth Proportional to 648,730.60, 973,188.90 and 199,489.20

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Solution

The fourth proportional to 648,730.60, 973,188.90 and 199,489.20 is: 299,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,730.60 : 973,188.90 = 199,489.20 : x
  2. Step 2: Convert to fraction form
    648,730.60/973,188.90 = 199,489.20/x
  3. Step 3: Cross multiply
    648,730.60x = 973,188.90 × 199,489.20
  4. Step 4: Simplify right side
    648,730.60x = 194,140,675,109.88
  5. Step 5: Solve for x
    x = 194,140,675,109.88/648,730.60
  6. Step 6: Final answer
    x = 299,262.40

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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.