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Finding the Fourth Proportional to 439,346.48, 606,278.90 and 258,077

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Solution

The fourth proportional to 439,346.48, 606,278.90 and 258,077 is: 356,134.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,346.48 : 606,278.90 = 258,077 : x
  2. Step 2: Convert to fraction form
    439,346.48/606,278.90 = 258,077/x
  3. Step 3: Cross multiply
    439,346.48x = 606,278.90 × 258,077
  4. Step 4: Simplify right side
    439,346.48x = 156,466,639,675.30
  5. Step 5: Solve for x
    x = 156,466,639,675.30/439,346.48
  6. Step 6: Final answer
    x = 356,134.96

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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.