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Finding the Fourth Proportional to 510,818.40, 766,308.60 and 173,890.80

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Solution

The fourth proportional to 510,818.40, 766,308.60 and 173,890.80 is: 260,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,818.40 : 766,308.60 = 173,890.80 : x
  2. Step 2: Convert to fraction form
    510,818.40/766,308.60 = 173,890.80/x
  3. Step 3: Cross multiply
    510,818.40x = 766,308.60 × 173,890.80
  4. Step 4: Simplify right side
    510,818.40x = 133,254,015,500.88
  5. Step 5: Solve for x
    x = 133,254,015,500.88/510,818.40
  6. Step 6: Final answer
    x = 260,863.77

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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.