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Finding the Fourth Proportional to 436,654, 654,980.88 and 121,110.94

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Solution

The fourth proportional to 436,654, 654,980.88 and 121,110.94 is: 181,666.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,654 : 654,980.88 = 121,110.94 : x
  2. Step 2: Convert to fraction form
    436,654/654,980.88 = 121,110.94/x
  3. Step 3: Cross multiply
    436,654x = 654,980.88 × 121,110.94
  4. Step 4: Simplify right side
    436,654x = 79,325,350,058.83
  5. Step 5: Solve for x
    x = 79,325,350,058.83/436,654
  6. Step 6: Final answer
    x = 181,666.38

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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.