Home / 378,848.34-522,809.64-209,081.25

Finding the Fourth Proportional to 378,848.34, 522,809.64 and 209,081.25

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Solution

The fourth proportional to 378,848.34, 522,809.64 and 209,081.25 is: 288,531.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,848.34 : 522,809.64 = 209,081.25 : x
  2. Step 2: Convert to fraction form
    378,848.34/522,809.64 = 209,081.25/x
  3. Step 3: Cross multiply
    378,848.34x = 522,809.64 × 209,081.25
  4. Step 4: Simplify right side
    378,848.34x = 109,309,693,043.25
  5. Step 5: Solve for x
    x = 109,309,693,043.25/378,848.34
  6. Step 6: Final answer
    x = 288,531.53

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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.