Home / 291,739.10-437,569.76-81,359.42

Finding the Fourth Proportional to 291,739.10, 437,569.76 and 81,359.42

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Solution

The fourth proportional to 291,739.10, 437,569.76 and 81,359.42 is: 122,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,739.10 : 437,569.76 = 81,359.42 : x
  2. Step 2: Convert to fraction form
    291,739.10/437,569.76 = 81,359.42/x
  3. Step 3: Cross multiply
    291,739.10x = 437,569.76 × 81,359.42
  4. Step 4: Simplify right side
    291,739.10x = 35,600,421,883.14
  5. Step 5: Solve for x
    x = 35,600,421,883.14/291,739.10
  6. Step 6: Final answer
    x = 122,028.28

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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.