Home / 385,385.12-531,787.10-222,065.44

Finding the Fourth Proportional to 385,385.12, 531,787.10 and 222,065.44

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Solution

The fourth proportional to 385,385.12, 531,787.10 and 222,065.44 is: 306,424.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,385.12 : 531,787.10 = 222,065.44 : x
  2. Step 2: Convert to fraction form
    385,385.12/531,787.10 = 222,065.44/x
  3. Step 3: Cross multiply
    385,385.12x = 531,787.10 × 222,065.44
  4. Step 4: Simplify right side
    385,385.12x = 118,091,536,347.82
  5. Step 5: Solve for x
    x = 118,091,536,347.82/385,385.12
  6. Step 6: Final answer
    x = 306,424.74

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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.