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Finding the Fourth Proportional to 510,431.50, 765,588.88 and 136,483.66

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Solution

The fourth proportional to 510,431.50, 765,588.88 and 136,483.66 is: 204,709.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,431.50 : 765,588.88 = 136,483.66 : x
  2. Step 2: Convert to fraction form
    510,431.50/765,588.88 = 136,483.66/x
  3. Step 3: Cross multiply
    510,431.50x = 765,588.88 × 136,483.66
  4. Step 4: Simplify right side
    510,431.50x = 104,490,372,397.70
  5. Step 5: Solve for x
    x = 104,490,372,397.70/510,431.50
  6. Step 6: Final answer
    x = 204,709.88

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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.