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Finding the Fourth Proportional to 510,405.60, 765,771.60 and 155,487.20

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Solution

The fourth proportional to 510,405.60, 765,771.60 and 155,487.20 is: 233,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,405.60 : 765,771.60 = 155,487.20 : x
  2. Step 2: Convert to fraction form
    510,405.60/765,771.60 = 155,487.20/x
  3. Step 3: Cross multiply
    510,405.60x = 765,771.60 × 155,487.20
  4. Step 4: Simplify right side
    510,405.60x = 119,067,681,923.52
  5. Step 5: Solve for x
    x = 119,067,681,923.52/510,405.60
  6. Step 6: Final answer
    x = 233,280.52

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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.