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Finding the Fourth Proportional to 279,338.83, 385,496.33 and 158,485.21

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Solution

The fourth proportional to 279,338.83, 385,496.33 and 158,485.21 is: 218,714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,338.83 : 385,496.33 = 158,485.21 : x
  2. Step 2: Convert to fraction form
    279,338.83/385,496.33 = 158,485.21/x
  3. Step 3: Cross multiply
    279,338.83x = 385,496.33 × 158,485.21
  4. Step 4: Simplify right side
    279,338.83x = 61,095,466,814.28
  5. Step 5: Solve for x
    x = 61,095,466,814.28/279,338.83
  6. Step 6: Final answer
    x = 218,714.55

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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.