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Finding the Fourth Proportional to 510,576.20, 765,945.34 and 155,507.88

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Solution

The fourth proportional to 510,576.20, 765,945.34 and 155,507.88 is: 233,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,576.20 : 765,945.34 = 155,507.88 : x
  2. Step 2: Convert to fraction form
    510,576.20/765,945.34 = 155,507.88/x
  3. Step 3: Cross multiply
    510,576.20x = 765,945.34 × 155,507.88
  4. Step 4: Simplify right side
    510,576.20x = 119,110,536,019.28
  5. Step 5: Solve for x
    x = 119,110,536,019.28/510,576.20
  6. Step 6: Final answer
    x = 233,286.50

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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.