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Finding the Fourth Proportional to 373,532.21, 515,498.78 and 212,402.25

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Solution

The fourth proportional to 373,532.21, 515,498.78 and 212,402.25 is: 293,128.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,532.21 : 515,498.78 = 212,402.25 : x
  2. Step 2: Convert to fraction form
    373,532.21/515,498.78 = 212,402.25/x
  3. Step 3: Cross multiply
    373,532.21x = 515,498.78 × 212,402.25
  4. Step 4: Simplify right side
    373,532.21x = 109,493,101,275.26
  5. Step 5: Solve for x
    x = 109,493,101,275.26/373,532.21
  6. Step 6: Final answer
    x = 293,128.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.