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Finding the Fourth Proportional to 210,737.16, 290,811.37 and 115,241.80

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Solution

The fourth proportional to 210,737.16, 290,811.37 and 115,241.80 is: 159,030.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,737.16 : 290,811.37 = 115,241.80 : x
  2. Step 2: Convert to fraction form
    210,737.16/290,811.37 = 115,241.80/x
  3. Step 3: Cross multiply
    210,737.16x = 290,811.37 × 115,241.80
  4. Step 4: Simplify right side
    210,737.16x = 33,513,625,975.47
  5. Step 5: Solve for x
    x = 33,513,625,975.47/210,737.16
  6. Step 6: Final answer
    x = 159,030.46

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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.