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Finding the Fourth Proportional to 279,312.45, 416,645.52 and 252,407.49

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Solution

The fourth proportional to 279,312.45, 416,645.52 and 252,407.49 is: 376,511.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,312.45 : 416,645.52 = 252,407.49 : x
  2. Step 2: Convert to fraction form
    279,312.45/416,645.52 = 252,407.49/x
  3. Step 3: Cross multiply
    279,312.45x = 416,645.52 × 252,407.49
  4. Step 4: Simplify right side
    279,312.45x = 105,164,449,922.95
  5. Step 5: Solve for x
    x = 105,164,449,922.95/279,312.45
  6. Step 6: Final answer
    x = 376,511.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.