Home / 382,981.87-528,434.89-221,827.31

Finding the Fourth Proportional to 382,981.87, 528,434.89 and 221,827.31

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Solution

The fourth proportional to 382,981.87, 528,434.89 and 221,827.31 is: 306,075.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,981.87 : 528,434.89 = 221,827.31 : x
  2. Step 2: Convert to fraction form
    382,981.87/528,434.89 = 221,827.31/x
  3. Step 3: Cross multiply
    382,981.87x = 528,434.89 × 221,827.31
  4. Step 4: Simplify right side
    382,981.87x = 117,221,288,943.73
  5. Step 5: Solve for x
    x = 117,221,288,943.73/382,981.87
  6. Step 6: Final answer
    x = 306,075.29

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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.