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Finding the Fourth Proportional to 235,875.45, 325,499.52 and 128,443.12

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Solution

The fourth proportional to 235,875.45, 325,499.52 and 128,443.12 is: 177,246.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,875.45 : 325,499.52 = 128,443.12 : x
  2. Step 2: Convert to fraction form
    235,875.45/325,499.52 = 128,443.12/x
  3. Step 3: Cross multiply
    235,875.45x = 325,499.52 × 128,443.12
  4. Step 4: Simplify right side
    235,875.45x = 41,808,173,907.30
  5. Step 5: Solve for x
    x = 41,808,173,907.30/235,875.45
  6. Step 6: Final answer
    x = 177,246.83

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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.