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Finding the Fourth Proportional to 486,801.12, 671,783.84 and 269,003.76

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Solution

The fourth proportional to 486,801.12, 671,783.84 and 269,003.76 is: 371,224.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,801.12 : 671,783.84 = 269,003.76 : x
  2. Step 2: Convert to fraction form
    486,801.12/671,783.84 = 269,003.76/x
  3. Step 3: Cross multiply
    486,801.12x = 671,783.84 × 269,003.76
  4. Step 4: Simplify right side
    486,801.12x = 180,712,378,867.24
  5. Step 5: Solve for x
    x = 180,712,378,867.24/486,801.12
  6. Step 6: Final answer
    x = 371,224.25

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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.