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Finding the Fourth Proportional to 307,091.92, 423,592.92 and 211,432.48

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Solution

The fourth proportional to 307,091.92, 423,592.92 and 211,432.48 is: 291,643.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,091.92 : 423,592.92 = 211,432.48 : x
  2. Step 2: Convert to fraction form
    307,091.92/423,592.92 = 211,432.48/x
  3. Step 3: Cross multiply
    307,091.92x = 423,592.92 × 211,432.48
  4. Step 4: Simplify right side
    307,091.92x = 89,561,301,586.04
  5. Step 5: Solve for x
    x = 89,561,301,586.04/307,091.92
  6. Step 6: Final answer
    x = 291,643.30

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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.