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Finding the Fourth Proportional to 243,189.66, 364,840.65 and 76,977.66

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Solution

The fourth proportional to 243,189.66, 364,840.65 and 76,977.66 is: 115,484.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,189.66 : 364,840.65 = 76,977.66 : x
  2. Step 2: Convert to fraction form
    243,189.66/364,840.65 = 76,977.66/x
  3. Step 3: Cross multiply
    243,189.66x = 364,840.65 × 76,977.66
  4. Step 4: Simplify right side
    243,189.66x = 28,084,579,509.88
  5. Step 5: Solve for x
    x = 28,084,579,509.88/243,189.66
  6. Step 6: Final answer
    x = 115,484.27

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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.