Home / 291,712.26-437,642.20-81,350.18

Finding the Fourth Proportional to 291,712.26, 437,642.20 and 81,350.18

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Solution

The fourth proportional to 291,712.26, 437,642.20 and 81,350.18 is: 122,045.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,712.26 : 437,642.20 = 81,350.18 : x
  2. Step 2: Convert to fraction form
    291,712.26/437,642.20 = 81,350.18/x
  3. Step 3: Cross multiply
    291,712.26x = 437,642.20 × 81,350.18
  4. Step 4: Simplify right side
    291,712.26x = 35,602,271,745.60
  5. Step 5: Solve for x
    x = 35,602,271,745.60/291,712.26
  6. Step 6: Final answer
    x = 122,045.85

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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.