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Finding the Fourth Proportional to 283,053.93, 390,614.43 and 155,726.79

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Solution

The fourth proportional to 283,053.93, 390,614.43 and 155,726.79 is: 214,902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,053.93 : 390,614.43 = 155,726.79 : x
  2. Step 2: Convert to fraction form
    283,053.93/390,614.43 = 155,726.79/x
  3. Step 3: Cross multiply
    283,053.93x = 390,614.43 × 155,726.79
  4. Step 4: Simplify right side
    283,053.93x = 60,829,131,311.58
  5. Step 5: Solve for x
    x = 60,829,131,311.58/283,053.93
  6. Step 6: Final answer
    x = 214,902.97

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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.