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Finding the Fourth Proportional to 305,234.33, 420,737.90 and 240,598.76

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Solution

The fourth proportional to 305,234.33, 420,737.90 and 240,598.76 is: 331,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,234.33 : 420,737.90 = 240,598.76 : x
  2. Step 2: Convert to fraction form
    305,234.33/420,737.90 = 240,598.76/x
  3. Step 3: Cross multiply
    305,234.33x = 420,737.90 × 240,598.76
  4. Step 4: Simplify right side
    305,234.33x = 101,229,013,718.32
  5. Step 5: Solve for x
    x = 101,229,013,718.32/305,234.33
  6. Step 6: Final answer
    x = 331,643.61

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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.