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Finding the Fourth Proportional to 510,109.60, 765,140.10 and 173,117.20

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Solution

The fourth proportional to 510,109.60, 765,140.10 and 173,117.20 is: 259,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,109.60 : 765,140.10 = 173,117.20 : x
  2. Step 2: Convert to fraction form
    510,109.60/765,140.10 = 173,117.20/x
  3. Step 3: Cross multiply
    510,109.60x = 765,140.10 × 173,117.20
  4. Step 4: Simplify right side
    510,109.60x = 132,458,911,719.72
  5. Step 5: Solve for x
    x = 132,458,911,719.72/510,109.60
  6. Step 6: Final answer
    x = 259,667.55

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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.