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Finding the Fourth Proportional to 291,783.60, 437,500.20 and 114,078.72

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Solution

The fourth proportional to 291,783.60, 437,500.20 and 114,078.72 is: 171,049.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,783.60 : 437,500.20 = 114,078.72 : x
  2. Step 2: Convert to fraction form
    291,783.60/437,500.20 = 114,078.72/x
  3. Step 3: Cross multiply
    291,783.60x = 437,500.20 × 114,078.72
  4. Step 4: Simplify right side
    291,783.60x = 49,909,462,815.74
  5. Step 5: Solve for x
    x = 49,909,462,815.74/291,783.60
  6. Step 6: Final answer
    x = 171,049.58

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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.