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Finding the Fourth Proportional to 354,057.98, 531,308.40 and 143,695.92

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Solution

The fourth proportional to 354,057.98, 531,308.40 and 143,695.92 is: 215,633.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,057.98 : 531,308.40 = 143,695.92 : x
  2. Step 2: Convert to fraction form
    354,057.98/531,308.40 = 143,695.92/x
  3. Step 3: Cross multiply
    354,057.98x = 531,308.40 × 143,695.92
  4. Step 4: Simplify right side
    354,057.98x = 76,346,849,341.73
  5. Step 5: Solve for x
    x = 76,346,849,341.73/354,057.98
  6. Step 6: Final answer
    x = 215,633.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.