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Finding the Fourth Proportional to 305,237.34, 420,742.02 and 240,601.77

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Solution

The fourth proportional to 305,237.34, 420,742.02 and 240,601.77 is: 331,647.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,237.34 : 420,742.02 = 240,601.77 : x
  2. Step 2: Convert to fraction form
    305,237.34/420,742.02 = 240,601.77/x
  3. Step 3: Cross multiply
    305,237.34x = 420,742.02 × 240,601.77
  4. Step 4: Simplify right side
    305,237.34x = 101,231,274,725.38
  5. Step 5: Solve for x
    x = 101,231,274,725.38/305,237.34
  6. Step 6: Final answer
    x = 331,647.74

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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.