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Finding the Fourth Proportional to 330,398.64, 455,986.62 and 185,218.38

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Solution

The fourth proportional to 330,398.64, 455,986.62 and 185,218.38 is: 255,621.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,398.64 : 455,986.62 = 185,218.38 : x
  2. Step 2: Convert to fraction form
    330,398.64/455,986.62 = 185,218.38/x
  3. Step 3: Cross multiply
    330,398.64x = 455,986.62 × 185,218.38
  4. Step 4: Simplify right side
    330,398.64x = 84,457,103,058.08
  5. Step 5: Solve for x
    x = 84,457,103,058.08/330,398.64
  6. Step 6: Final answer
    x = 255,621.82

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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.