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Finding the Fourth Proportional to 305,246.81, 421,240.60 and 169,301.58

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Solution

The fourth proportional to 305,246.81, 421,240.60 and 169,301.58 is: 233,636.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,246.81 : 421,240.60 = 169,301.58 : x
  2. Step 2: Convert to fraction form
    305,246.81/421,240.60 = 169,301.58/x
  3. Step 3: Cross multiply
    305,246.81x = 421,240.60 × 169,301.58
  4. Step 4: Simplify right side
    305,246.81x = 71,316,697,772.12
  5. Step 5: Solve for x
    x = 71,316,697,772.12/305,246.81
  6. Step 6: Final answer
    x = 233,636.18

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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.