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Finding the Fourth Proportional to 291,482.64, 437,239.44 and 91,818.54

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Solution

The fourth proportional to 291,482.64, 437,239.44 and 91,818.54 is: 137,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,482.64 : 437,239.44 = 91,818.54 : x
  2. Step 2: Convert to fraction form
    291,482.64/437,239.44 = 91,818.54/x
  3. Step 3: Cross multiply
    291,482.64x = 437,239.44 × 91,818.54
  4. Step 4: Simplify right side
    291,482.64x = 40,146,687,011.22
  5. Step 5: Solve for x
    x = 40,146,687,011.22/291,482.64
  6. Step 6: Final answer
    x = 137,732.69

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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.