Home / 385,116.98-531,415.12-221,826.59

Finding the Fourth Proportional to 385,116.98, 531,415.12 and 221,826.59

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Solution

The fourth proportional to 385,116.98, 531,415.12 and 221,826.59 is: 306,094.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,116.98 : 531,415.12 = 221,826.59 : x
  2. Step 2: Convert to fraction form
    385,116.98/531,415.12 = 221,826.59/x
  3. Step 3: Cross multiply
    385,116.98x = 531,415.12 × 221,826.59
  4. Step 4: Simplify right side
    385,116.98x = 117,882,003,944.04
  5. Step 5: Solve for x
    x = 117,882,003,944.04/385,116.98
  6. Step 6: Final answer
    x = 306,094.02

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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.