Home / 280,187.05-386,687.95-171,355.06

Finding the Fourth Proportional to 280,187.05, 386,687.95 and 171,355.06

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Solution

The fourth proportional to 280,187.05, 386,687.95 and 171,355.06 is: 236,488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,187.05 : 386,687.95 = 171,355.06 : x
  2. Step 2: Convert to fraction form
    280,187.05/386,687.95 = 171,355.06/x
  3. Step 3: Cross multiply
    280,187.05x = 386,687.95 × 171,355.06
  4. Step 4: Simplify right side
    280,187.05x = 66,260,935,779.10
  5. Step 5: Solve for x
    x = 66,260,935,779.10/280,187.05
  6. Step 6: Final answer
    x = 236,488.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.