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Finding the Fourth Proportional to 606,409.88, 909,611.15 and 157,129.61

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Solution

The fourth proportional to 606,409.88, 909,611.15 and 157,129.61 is: 235,693.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,409.88 : 909,611.15 = 157,129.61 : x
  2. Step 2: Convert to fraction form
    606,409.88/909,611.15 = 157,129.61/x
  3. Step 3: Cross multiply
    606,409.88x = 909,611.15 × 157,129.61
  4. Step 4: Simplify right side
    606,409.88x = 142,926,839,917.45
  5. Step 5: Solve for x
    x = 142,926,839,917.45/606,409.88
  6. Step 6: Final answer
    x = 235,693.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.