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Finding the Fourth Proportional to 305,262.17, 421,233.58 and 169,293.61

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Solution

The fourth proportional to 305,262.17, 421,233.58 and 169,293.61 is: 233,609.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,262.17 : 421,233.58 = 169,293.61 : x
  2. Step 2: Convert to fraction form
    305,262.17/421,233.58 = 169,293.61/x
  3. Step 3: Cross multiply
    305,262.17x = 421,233.58 × 169,293.61
  4. Step 4: Simplify right side
    305,262.17x = 71,312,153,411.42
  5. Step 5: Solve for x
    x = 71,312,153,411.42/305,262.17
  6. Step 6: Final answer
    x = 233,609.53

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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.