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Finding the Fourth Proportional to 235,684.37, 325,244.21 and 128,254.20

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Solution

The fourth proportional to 235,684.37, 325,244.21 and 128,254.20 is: 176,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,684.37 : 325,244.21 = 128,254.20 : x
  2. Step 2: Convert to fraction form
    235,684.37/325,244.21 = 128,254.20/x
  3. Step 3: Cross multiply
    235,684.37x = 325,244.21 × 128,254.20
  4. Step 4: Simplify right side
    235,684.37x = 41,713,935,316.91
  5. Step 5: Solve for x
    x = 41,713,935,316.91/235,684.37
  6. Step 6: Final answer
    x = 176,990.68

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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.