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Finding the Fourth Proportional to 510,427.08, 765,751.32 and 155,431.80

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Solution

The fourth proportional to 510,427.08, 765,751.32 and 155,431.80 is: 233,181.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,427.08 : 765,751.32 = 155,431.80 : x
  2. Step 2: Convert to fraction form
    510,427.08/765,751.32 = 155,431.80/x
  3. Step 3: Cross multiply
    510,427.08x = 765,751.32 × 155,431.80
  4. Step 4: Simplify right side
    510,427.08x = 119,022,106,019.98
  5. Step 5: Solve for x
    x = 119,022,106,019.98/510,427.08
  6. Step 6: Final answer
    x = 233,181.41

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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.