Home / 253,694.08-380,562.24-85,206.40

Finding the Fourth Proportional to 253,694.08, 380,562.24 and 85,206.40

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Solution

The fourth proportional to 253,694.08, 380,562.24 and 85,206.40 is: 127,816.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,694.08 : 380,562.24 = 85,206.40 : x
  2. Step 2: Convert to fraction form
    253,694.08/380,562.24 = 85,206.40/x
  3. Step 3: Cross multiply
    253,694.08x = 380,562.24 × 85,206.40
  4. Step 4: Simplify right side
    253,694.08x = 32,426,338,446.34
  5. Step 5: Solve for x
    x = 32,426,338,446.34/253,694.08
  6. Step 6: Final answer
    x = 127,816.69

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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.