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Finding the Fourth Proportional to 316,441.34, 436,900.46 and 187,421.30

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Solution

The fourth proportional to 316,441.34, 436,900.46 and 187,421.30 is: 258,766.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,441.34 : 436,900.46 = 187,421.30 : x
  2. Step 2: Convert to fraction form
    316,441.34/436,900.46 = 187,421.30/x
  3. Step 3: Cross multiply
    316,441.34x = 436,900.46 × 187,421.30
  4. Step 4: Simplify right side
    316,441.34x = 81,884,452,183.80
  5. Step 5: Solve for x
    x = 81,884,452,183.80/316,441.34
  6. Step 6: Final answer
    x = 258,766.61

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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.