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Finding the Fourth Proportional to 515,725.69, 773,593.85 and 155,899.49

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Solution

The fourth proportional to 515,725.69, 773,593.85 and 155,899.49 is: 233,850.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,725.69 : 773,593.85 = 155,899.49 : x
  2. Step 2: Convert to fraction form
    515,725.69/773,593.85 = 155,899.49/x
  3. Step 3: Cross multiply
    515,725.69x = 773,593.85 × 155,899.49
  4. Step 4: Simplify right side
    515,725.69x = 120,602,886,682.14
  5. Step 5: Solve for x
    x = 120,602,886,682.14/515,725.69
  6. Step 6: Final answer
    x = 233,850.84

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1.5x scale

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.