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Finding the Fourth Proportional to 510,478.32, 765,832.70 and 168,920.87

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Solution

The fourth proportional to 510,478.32, 765,832.70 and 168,920.87 is: 253,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,478.32 : 765,832.70 = 168,920.87 : x
  2. Step 2: Convert to fraction form
    510,478.32/765,832.70 = 168,920.87/x
  3. Step 3: Cross multiply
    510,478.32x = 765,832.70 × 168,920.87
  4. Step 4: Simplify right side
    510,478.32x = 129,365,128,295.33
  5. Step 5: Solve for x
    x = 129,365,128,295.33/510,478.32
  6. Step 6: Final answer
    x = 253,419.44

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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.