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Finding the Fourth Proportional to 239,169.60, 358,112.88 and 133,688.16

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Solution

The fourth proportional to 239,169.60, 358,112.88 and 133,688.16 is: 200,173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,169.60 : 358,112.88 = 133,688.16 : x
  2. Step 2: Convert to fraction form
    239,169.60/358,112.88 = 133,688.16/x
  3. Step 3: Cross multiply
    239,169.60x = 358,112.88 × 133,688.16
  4. Step 4: Simplify right side
    239,169.60x = 47,875,451,999.50
  5. Step 5: Solve for x
    x = 47,875,451,999.50/239,169.60
  6. Step 6: Final answer
    x = 200,173.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.