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Finding the Fourth Proportional to 307,809.30, 460,979.55 and 149,529.30

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Solution

The fourth proportional to 307,809.30, 460,979.55 and 149,529.30 is: 223,937.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,809.30 : 460,979.55 = 149,529.30 : x
  2. Step 2: Convert to fraction form
    307,809.30/460,979.55 = 149,529.30/x
  3. Step 3: Cross multiply
    307,809.30x = 460,979.55 × 149,529.30
  4. Step 4: Simplify right side
    307,809.30x = 68,929,949,425.82
  5. Step 5: Solve for x
    x = 68,929,949,425.82/307,809.30
  6. Step 6: Final answer
    x = 223,937.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.