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Finding the Fourth Proportional to 281,726.61, 388,781.96 and 152,668.66

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Solution

The fourth proportional to 281,726.61, 388,781.96 and 152,668.66 is: 210,682.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,726.61 : 388,781.96 = 152,668.66 : x
  2. Step 2: Convert to fraction form
    281,726.61/388,781.96 = 152,668.66/x
  3. Step 3: Cross multiply
    281,726.61x = 388,781.96 × 152,668.66
  4. Step 4: Simplify right side
    281,726.61x = 59,354,821,908.60
  5. Step 5: Solve for x
    x = 59,354,821,908.60/281,726.61
  6. Step 6: Final answer
    x = 210,682.34

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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.