Home / 385,058.12-531,398.91-212,975.39

Finding the Fourth Proportional to 385,058.12, 531,398.91 and 212,975.39

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Solution

The fourth proportional to 385,058.12, 531,398.91 and 212,975.39 is: 293,916.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,058.12 : 531,398.91 = 212,975.39 : x
  2. Step 2: Convert to fraction form
    385,058.12/531,398.91 = 212,975.39/x
  3. Step 3: Cross multiply
    385,058.12x = 531,398.91 × 212,975.39
  4. Step 4: Simplify right side
    385,058.12x = 113,174,892,229.98
  5. Step 5: Solve for x
    x = 113,174,892,229.98/385,058.12
  6. Step 6: Final answer
    x = 293,916.39

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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.