Home / 459,541.12-689,177.76-178,991.68

Finding the Fourth Proportional to 459,541.12, 689,177.76 and 178,991.68

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Solution

The fourth proportional to 459,541.12, 689,177.76 and 178,991.68 is: 268,435.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,541.12 : 689,177.76 = 178,991.68 : x
  2. Step 2: Convert to fraction form
    459,541.12/689,177.76 = 178,991.68/x
  3. Step 3: Cross multiply
    459,541.12x = 689,177.76 × 178,991.68
  4. Step 4: Simplify right side
    459,541.12x = 123,357,085,081.04
  5. Step 5: Solve for x
    x = 123,357,085,081.04/459,541.12
  6. Step 6: Final answer
    x = 268,435.36

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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.