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Finding the Fourth Proportional to 510,108.40, 765,249.74 and 210,425.16

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Solution

The fourth proportional to 510,108.40, 765,249.74 and 210,425.16 is: 315,673.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,108.40 : 765,249.74 = 210,425.16 : x
  2. Step 2: Convert to fraction form
    510,108.40/765,249.74 = 210,425.16/x
  3. Step 3: Cross multiply
    510,108.40x = 765,249.74 × 210,425.16
  4. Step 4: Simplify right side
    510,108.40x = 161,027,798,979.46
  5. Step 5: Solve for x
    x = 161,027,798,979.46/510,108.40
  6. Step 6: Final answer
    x = 315,673.69

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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.