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Finding the Fourth Proportional to 291,462.19, 437,208.92 and 91,798.20

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Solution

The fourth proportional to 291,462.19, 437,208.92 and 91,798.20 is: 137,702.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,462.19 : 437,208.92 = 91,798.20 : x
  2. Step 2: Convert to fraction form
    291,462.19/437,208.92 = 91,798.20/x
  3. Step 3: Cross multiply
    291,462.19x = 437,208.92 × 91,798.20
  4. Step 4: Simplify right side
    291,462.19x = 40,134,991,879.94
  5. Step 5: Solve for x
    x = 40,134,991,879.94/291,462.19
  6. Step 6: Final answer
    x = 137,702.22

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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.