Home / 327,931.83-492,178.13-128,392.35

Finding the Fourth Proportional to 327,931.83, 492,178.13 and 128,392.35

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Solution

The fourth proportional to 327,931.83, 492,178.13 and 128,392.35 is: 192,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,931.83 : 492,178.13 = 128,392.35 : x
  2. Step 2: Convert to fraction form
    327,931.83/492,178.13 = 128,392.35/x
  3. Step 3: Cross multiply
    327,931.83x = 492,178.13 × 128,392.35
  4. Step 4: Simplify right side
    327,931.83x = 63,191,906,087.34
  5. Step 5: Solve for x
    x = 63,191,906,087.34/327,931.83
  6. Step 6: Final answer
    x = 192,698.30

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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.