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Finding the Fourth Proportional to 221,141.78, 304,866.47 and 187,013.03

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Solution

The fourth proportional to 221,141.78, 304,866.47 and 187,013.03 is: 257,816.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,141.78 : 304,866.47 = 187,013.03 : x
  2. Step 2: Convert to fraction form
    221,141.78/304,866.47 = 187,013.03/x
  3. Step 3: Cross multiply
    221,141.78x = 304,866.47 × 187,013.03
  4. Step 4: Simplify right side
    221,141.78x = 57,014,001,365.04
  5. Step 5: Solve for x
    x = 57,014,001,365.04/221,141.78
  6. Step 6: Final answer
    x = 257,816.51

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1.5x scale

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.