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Finding the Fourth Proportional to 485,560.56, 670,160.15 and 304,427.76

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Solution

The fourth proportional to 485,560.56, 670,160.15 and 304,427.76 is: 420,164.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,560.56 : 670,160.15 = 304,427.76 : x
  2. Step 2: Convert to fraction form
    485,560.56/670,160.15 = 304,427.76/x
  3. Step 3: Cross multiply
    485,560.56x = 670,160.15 × 304,427.76
  4. Step 4: Simplify right side
    485,560.56x = 204,015,353,305.76
  5. Step 5: Solve for x
    x = 204,015,353,305.76/485,560.56
  6. Step 6: Final answer
    x = 420,164.59

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1.5x scale

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.