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Finding the Fourth Proportional to 510,559.94, 765,445.41 and 257,710.28

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Solution

The fourth proportional to 510,559.94, 765,445.41 and 257,710.28 is: 386,366.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,559.94 : 765,445.41 = 257,710.28 : x
  2. Step 2: Convert to fraction form
    510,559.94/765,445.41 = 257,710.28/x
  3. Step 3: Cross multiply
    510,559.94x = 765,445.41 × 257,710.28
  4. Step 4: Simplify right side
    510,559.94x = 197,263,147,108.59
  5. Step 5: Solve for x
    x = 197,263,147,108.59/510,559.94
  6. Step 6: Final answer
    x = 386,366.28

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Similar ratio
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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.