Home / 385,276.12-531,721.07-221,938.27

Finding the Fourth Proportional to 385,276.12, 531,721.07 and 221,938.27

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Solution

The fourth proportional to 385,276.12, 531,721.07 and 221,938.27 is: 306,297.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,276.12 : 531,721.07 = 221,938.27 : x
  2. Step 2: Convert to fraction form
    385,276.12/531,721.07 = 221,938.27/x
  3. Step 3: Cross multiply
    385,276.12x = 531,721.07 × 221,938.27
  4. Step 4: Simplify right side
    385,276.12x = 118,009,254,398.35
  5. Step 5: Solve for x
    x = 118,009,254,398.35/385,276.12
  6. Step 6: Final answer
    x = 306,297.87

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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.