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Finding the Fourth Proportional to 354,458.16, 488,983.43 and 239,776.94

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Solution

The fourth proportional to 354,458.16, 488,983.43 and 239,776.94 is: 330,777.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,458.16 : 488,983.43 = 239,776.94 : x
  2. Step 2: Convert to fraction form
    354,458.16/488,983.43 = 239,776.94/x
  3. Step 3: Cross multiply
    354,458.16x = 488,983.43 × 239,776.94
  4. Step 4: Simplify right side
    354,458.16x = 117,246,952,378.01
  5. Step 5: Solve for x
    x = 117,246,952,378.01/354,458.16
  6. Step 6: Final answer
    x = 330,777.97

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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.