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Finding the Fourth Proportional to 210,551.62, 290,559.54 and 115,056.58

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Solution

The fourth proportional to 210,551.62, 290,559.54 and 115,056.58 is: 158,777.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,551.62 : 290,559.54 = 115,056.58 : x
  2. Step 2: Convert to fraction form
    210,551.62/290,559.54 = 115,056.58/x
  3. Step 3: Cross multiply
    210,551.62x = 290,559.54 × 115,056.58
  4. Step 4: Simplify right side
    210,551.62x = 33,430,786,958.77
  5. Step 5: Solve for x
    x = 33,430,786,958.77/210,551.62
  6. Step 6: Final answer
    x = 158,777.15

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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.