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Finding the Fourth Proportional to 399,235.58, 550,944.57 and 255,995.28

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Solution

The fourth proportional to 399,235.58, 550,944.57 and 255,995.28 is: 353,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,235.58 : 550,944.57 = 255,995.28 : x
  2. Step 2: Convert to fraction form
    399,235.58/550,944.57 = 255,995.28/x
  3. Step 3: Cross multiply
    399,235.58x = 550,944.57 × 255,995.28
  4. Step 4: Simplify right side
    399,235.58x = 141,039,209,461.63
  5. Step 5: Solve for x
    x = 141,039,209,461.63/399,235.58
  6. Step 6: Final answer
    x = 353,273.15

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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.