Home / 400,820.73-553,112.87-219,533.46

Finding the Fourth Proportional to 400,820.73, 553,112.87 and 219,533.46

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Solution

The fourth proportional to 400,820.73, 553,112.87 and 219,533.46 is: 302,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,820.73 : 553,112.87 = 219,533.46 : x
  2. Step 2: Convert to fraction form
    400,820.73/553,112.87 = 219,533.46/x
  3. Step 3: Cross multiply
    400,820.73x = 553,112.87 × 219,533.46
  4. Step 4: Simplify right side
    400,820.73x = 121,426,781,023.96
  5. Step 5: Solve for x
    x = 121,426,781,023.96/400,820.73
  6. Step 6: Final answer
    x = 302,945.36

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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.