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Finding the Fourth Proportional to 239,412.64, 330,390.46 and 131,980.32

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Solution

The fourth proportional to 239,412.64, 330,390.46 and 131,980.32 is: 182,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,412.64 : 330,390.46 = 131,980.32 : x
  2. Step 2: Convert to fraction form
    239,412.64/330,390.46 = 131,980.32/x
  3. Step 3: Cross multiply
    239,412.64x = 330,390.46 × 131,980.32
  4. Step 4: Simplify right side
    239,412.64x = 43,605,038,635.75
  5. Step 5: Solve for x
    x = 43,605,038,635.75/239,412.64
  6. Step 6: Final answer
    x = 182,133.40

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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.