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Finding the Fourth Proportional to 354,176.44, 531,277.62 and 143,809.72

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Solution

The fourth proportional to 354,176.44, 531,277.62 and 143,809.72 is: 215,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,176.44 : 531,277.62 = 143,809.72 : x
  2. Step 2: Convert to fraction form
    354,176.44/531,277.62 = 143,809.72/x
  3. Step 3: Cross multiply
    354,176.44x = 531,277.62 × 143,809.72
  4. Step 4: Simplify right side
    354,176.44x = 76,402,885,774.47
  5. Step 5: Solve for x
    x = 76,402,885,774.47/354,176.44
  6. Step 6: Final answer
    x = 215,719.84

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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.