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Finding the Fourth Proportional to 354,384.32, 531,770.88 and 143,965.76

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Solution

The fourth proportional to 354,384.32, 531,770.88 and 143,965.76 is: 216,027.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,384.32 : 531,770.88 = 143,965.76 : x
  2. Step 2: Convert to fraction form
    354,384.32/531,770.88 = 143,965.76/x
  3. Step 3: Cross multiply
    354,384.32x = 531,770.88 × 143,965.76
  4. Step 4: Simplify right side
    354,384.32x = 76,556,798,885.07
  5. Step 5: Solve for x
    x = 76,556,798,885.07/354,384.32
  6. Step 6: Final answer
    x = 216,027.61

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1.5x scale

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.