Home / 306,324.05-459,501.12-81,686.52

Finding the Fourth Proportional to 306,324.05, 459,501.12 and 81,686.52

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Solution

The fourth proportional to 306,324.05, 459,501.12 and 81,686.52 is: 122,533.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,324.05 : 459,501.12 = 81,686.52 : x
  2. Step 2: Convert to fraction form
    306,324.05/459,501.12 = 81,686.52/x
  3. Step 3: Cross multiply
    306,324.05x = 459,501.12 × 81,686.52
  4. Step 4: Simplify right side
    306,324.05x = 37,535,047,428.90
  5. Step 5: Solve for x
    x = 37,535,047,428.90/306,324.05
  6. Step 6: Final answer
    x = 122,533.79

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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.