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Finding the Fourth Proportional to 510,930.60, 766,868.94 and 258,389.88

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Solution

The fourth proportional to 510,930.60, 766,868.94 and 258,389.88 is: 387,824.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,930.60 : 766,868.94 = 258,389.88 : x
  2. Step 2: Convert to fraction form
    510,930.60/766,868.94 = 258,389.88/x
  3. Step 3: Cross multiply
    510,930.60x = 766,868.94 × 258,389.88
  4. Step 4: Simplify right side
    510,930.60x = 198,151,173,382.33
  5. Step 5: Solve for x
    x = 198,151,173,382.33/510,930.60
  6. Step 6: Final answer
    x = 387,824.05

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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.