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Finding the Fourth Proportional to 291,507.76, 437,328.60 and 151,235.20

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Solution

The fourth proportional to 291,507.76, 437,328.60 and 151,235.20 is: 226,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,507.76 : 437,328.60 = 151,235.20 : x
  2. Step 2: Convert to fraction form
    291,507.76/437,328.60 = 151,235.20/x
  3. Step 3: Cross multiply
    291,507.76x = 437,328.60 × 151,235.20
  4. Step 4: Simplify right side
    291,507.76x = 66,139,478,286.72
  5. Step 5: Solve for x
    x = 66,139,478,286.72/291,507.76
  6. Step 6: Final answer
    x = 226,887.54

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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.