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Finding the Fourth Proportional to 510,475.32, 765,828.20 and 168,917.87

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Solution

The fourth proportional to 510,475.32, 765,828.20 and 168,917.87 is: 253,414.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,475.32 : 765,828.20 = 168,917.87 : x
  2. Step 2: Convert to fraction form
    510,475.32/765,828.20 = 168,917.87/x
  3. Step 3: Cross multiply
    510,475.32x = 765,828.20 × 168,917.87
  4. Step 4: Simplify right side
    510,475.32x = 129,362,070,666.80
  5. Step 5: Solve for x
    x = 129,362,070,666.80/510,475.32
  6. Step 6: Final answer
    x = 253,414.94

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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.