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Finding the Fourth Proportional to 235,808.91, 325,422.15 and 128,384.84

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Solution

The fourth proportional to 235,808.91, 325,422.15 and 128,384.84 is: 177,174.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,808.91 : 325,422.15 = 128,384.84 : x
  2. Step 2: Convert to fraction form
    235,808.91/325,422.15 = 128,384.84/x
  3. Step 3: Cross multiply
    235,808.91x = 325,422.15 × 128,384.84
  4. Step 4: Simplify right side
    235,808.91x = 41,779,269,033.10
  5. Step 5: Solve for x
    x = 41,779,269,033.10/235,808.91
  6. Step 6: Final answer
    x = 177,174.26

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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.