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Finding the Fourth Proportional to 356,800.30, 492,407.18 and 235,729.20

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Solution

The fourth proportional to 356,800.30, 492,407.18 and 235,729.20 is: 325,321.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,800.30 : 492,407.18 = 235,729.20 : x
  2. Step 2: Convert to fraction form
    356,800.30/492,407.18 = 235,729.20/x
  3. Step 3: Cross multiply
    356,800.30x = 492,407.18 × 235,729.20
  4. Step 4: Simplify right side
    356,800.30x = 116,074,746,974.97
  5. Step 5: Solve for x
    x = 116,074,746,974.97/356,800.30
  6. Step 6: Final answer
    x = 325,321.33

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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.