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Finding the Fourth Proportional to 397,320.40, 595,980.60 and 239,856.40

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Solution

The fourth proportional to 397,320.40, 595,980.60 and 239,856.40 is: 359,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,320.40 : 595,980.60 = 239,856.40 : x
  2. Step 2: Convert to fraction form
    397,320.40/595,980.60 = 239,856.40/x
  3. Step 3: Cross multiply
    397,320.40x = 595,980.60 × 239,856.40
  4. Step 4: Simplify right side
    397,320.40x = 142,949,761,185.84
  5. Step 5: Solve for x
    x = 142,949,761,185.84/397,320.40
  6. Step 6: Final answer
    x = 359,784.60

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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.