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Finding the Fourth Proportional to 307,654.76, 424,563.66 and 169,833.78

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Solution

The fourth proportional to 307,654.76, 424,563.66 and 169,833.78 is: 234,370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,654.76 : 424,563.66 = 169,833.78 : x
  2. Step 2: Convert to fraction form
    307,654.76/424,563.66 = 169,833.78/x
  3. Step 3: Cross multiply
    307,654.76x = 424,563.66 × 169,833.78
  4. Step 4: Simplify right side
    307,654.76x = 72,105,251,228.43
  5. Step 5: Solve for x
    x = 72,105,251,228.43/307,654.76
  6. Step 6: Final answer
    x = 234,370.67

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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.