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Finding the Fourth Proportional to 402,013.52, 554,757 and 223,154

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Solution

The fourth proportional to 402,013.52, 554,757 and 223,154 is: 307,940.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,013.52 : 554,757 = 223,154 : x
  2. Step 2: Convert to fraction form
    402,013.52/554,757 = 223,154/x
  3. Step 3: Cross multiply
    402,013.52x = 554,757 × 223,154
  4. Step 4: Simplify right side
    402,013.52x = 123,796,243,578
  5. Step 5: Solve for x
    x = 123,796,243,578/402,013.52
  6. Step 6: Final answer
    x = 307,940.50

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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.