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Finding the Fourth Proportional to 242,564.60, 363,782.10 and 84,776.60

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Solution

The fourth proportional to 242,564.60, 363,782.10 and 84,776.60 is: 127,142.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,564.60 : 363,782.10 = 84,776.60 : x
  2. Step 2: Convert to fraction form
    242,564.60/363,782.10 = 84,776.60/x
  3. Step 3: Cross multiply
    242,564.60x = 363,782.10 × 84,776.60
  4. Step 4: Simplify right side
    242,564.60x = 30,840,209,578.86
  5. Step 5: Solve for x
    x = 30,840,209,578.86/242,564.60
  6. Step 6: Final answer
    x = 127,142.25

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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.