Home / 385,476.11-531,963.33-211,043.40

Finding the Fourth Proportional to 385,476.11, 531,963.33 and 211,043.40

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Solution

The fourth proportional to 385,476.11, 531,963.33 and 211,043.40 is: 291,243.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,476.11 : 531,963.33 = 211,043.40 : x
  2. Step 2: Convert to fraction form
    385,476.11/531,963.33 = 211,043.40/x
  3. Step 3: Cross multiply
    385,476.11x = 531,963.33 × 211,043.40
  4. Step 4: Simplify right side
    385,476.11x = 112,267,349,838.52
  5. Step 5: Solve for x
    x = 112,267,349,838.52/385,476.11
  6. Step 6: Final answer
    x = 291,243.34

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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.