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Finding the Fourth Proportional to 374,894.75, 517,354.76 and 205,128.88

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Solution

The fourth proportional to 374,894.75, 517,354.76 and 205,128.88 is: 283,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,894.75 : 517,354.76 = 205,128.88 : x
  2. Step 2: Convert to fraction form
    374,894.75/517,354.76 = 205,128.88/x
  3. Step 3: Cross multiply
    374,894.75x = 517,354.76 × 205,128.88
  4. Step 4: Simplify right side
    374,894.75x = 106,124,402,481.47
  5. Step 5: Solve for x
    x = 106,124,402,481.47/374,894.75
  6. Step 6: Final answer
    x = 283,077.86

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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.