Home / 393,411.33-543,156.03-272,509.11

Finding the Fourth Proportional to 393,411.33, 543,156.03 and 272,509.11

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Solution

The fourth proportional to 393,411.33, 543,156.03 and 272,509.11 is: 376,234.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,411.33 : 543,156.03 = 272,509.11 : x
  2. Step 2: Convert to fraction form
    393,411.33/543,156.03 = 272,509.11/x
  3. Step 3: Cross multiply
    393,411.33x = 543,156.03 × 272,509.11
  4. Step 4: Simplify right side
    393,411.33x = 148,014,966,326.43
  5. Step 5: Solve for x
    x = 148,014,966,326.43/393,411.33
  6. Step 6: Final answer
    x = 376,234.63

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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.