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Finding the Fourth Proportional to 510,187.40, 765,362.10 and 173,259.80

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Solution

The fourth proportional to 510,187.40, 765,362.10 and 173,259.80 is: 259,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,187.40 : 765,362.10 = 173,259.80 : x
  2. Step 2: Convert to fraction form
    510,187.40/765,362.10 = 173,259.80/x
  3. Step 3: Cross multiply
    510,187.40x = 765,362.10 × 173,259.80
  4. Step 4: Simplify right side
    510,187.40x = 132,606,484,373.58
  5. Step 5: Solve for x
    x = 132,606,484,373.58/510,187.40
  6. Step 6: Final answer
    x = 259,917.21

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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.