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Finding the Fourth Proportional to 279,698.93, 385,994.45 and 158,836.85

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Solution

The fourth proportional to 279,698.93, 385,994.45 and 158,836.85 is: 219,200.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,698.93 : 385,994.45 = 158,836.85 : x
  2. Step 2: Convert to fraction form
    279,698.93/385,994.45 = 158,836.85/x
  3. Step 3: Cross multiply
    279,698.93x = 385,994.45 × 158,836.85
  4. Step 4: Simplify right side
    279,698.93x = 61,310,142,555.48
  5. Step 5: Solve for x
    x = 61,310,142,555.48/279,698.93
  6. Step 6: Final answer
    x = 219,200.49

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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.