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Finding the Fourth Proportional to 510,186.60, 765,251.55 and 155,172.71

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Solution

The fourth proportional to 510,186.60, 765,251.55 and 155,172.71 is: 232,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,186.60 : 765,251.55 = 155,172.71 : x
  2. Step 2: Convert to fraction form
    510,186.60/765,251.55 = 155,172.71/x
  3. Step 3: Cross multiply
    510,186.60x = 765,251.55 × 155,172.71
  4. Step 4: Simplify right side
    510,186.60x = 118,746,158,758.33
  5. Step 5: Solve for x
    x = 118,746,158,758.33/510,186.60
  6. Step 6: Final answer
    x = 232,750.45

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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.