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Finding the Fourth Proportional to 510,216.71, 765,294.08 and 190,306.91

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Solution

The fourth proportional to 510,216.71, 765,294.08 and 190,306.91 is: 285,448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,216.71 : 765,294.08 = 190,306.91 : x
  2. Step 2: Convert to fraction form
    510,216.71/765,294.08 = 190,306.91/x
  3. Step 3: Cross multiply
    510,216.71x = 765,294.08 × 190,306.91
  4. Step 4: Simplify right side
    510,216.71x = 145,640,751,606.09
  5. Step 5: Solve for x
    x = 145,640,751,606.09/510,216.71
  6. Step 6: Final answer
    x = 285,448.81

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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.