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Finding the Fourth Proportional to 291,482.04, 437,234.58 and 81,138.36

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Solution

The fourth proportional to 291,482.04, 437,234.58 and 81,138.36 is: 121,710.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,482.04 : 437,234.58 = 81,138.36 : x
  2. Step 2: Convert to fraction form
    291,482.04/437,234.58 = 81,138.36/x
  3. Step 3: Cross multiply
    291,482.04x = 437,234.58 × 81,138.36
  4. Step 4: Simplify right side
    291,482.04x = 35,476,496,756.49
  5. Step 5: Solve for x
    x = 35,476,496,756.49/291,482.04
  6. Step 6: Final answer
    x = 121,710.75

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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.