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Finding the Fourth Proportional to 305,230.29, 421,131.74 and 240,498.83

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Solution

The fourth proportional to 305,230.29, 421,131.74 and 240,498.83 is: 331,820.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,230.29 : 421,131.74 = 240,498.83 : x
  2. Step 2: Convert to fraction form
    305,230.29/421,131.74 = 240,498.83/x
  3. Step 3: Cross multiply
    305,230.29x = 421,131.74 × 240,498.83
  4. Step 4: Simplify right side
    305,230.29x = 101,281,687,437.71
  5. Step 5: Solve for x
    x = 101,281,687,437.71/305,230.29
  6. Step 6: Final answer
    x = 331,820.57

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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.