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Finding the Fourth Proportional to 320,863.64, 442,816.40 and 183,045.60

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Solution

The fourth proportional to 320,863.64, 442,816.40 and 183,045.60 is: 252,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,863.64 : 442,816.40 = 183,045.60 : x
  2. Step 2: Convert to fraction form
    320,863.64/442,816.40 = 183,045.60/x
  3. Step 3: Cross multiply
    320,863.64x = 442,816.40 × 183,045.60
  4. Step 4: Simplify right side
    320,863.64x = 81,055,594,085.45
  5. Step 5: Solve for x
    x = 81,055,594,085.45/320,863.64
  6. Step 6: Final answer
    x = 252,616.95

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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.