Home / 328,255.30-492,185.85-128,337.31

Finding the Fourth Proportional to 328,255.30, 492,185.85 and 128,337.31

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Solution

The fourth proportional to 328,255.30, 492,185.85 and 128,337.31 is: 192,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,255.30 : 492,185.85 = 128,337.31 : x
  2. Step 2: Convert to fraction form
    328,255.30/492,185.85 = 128,337.31/x
  3. Step 3: Cross multiply
    328,255.30x = 492,185.85 × 128,337.31
  4. Step 4: Simplify right side
    328,255.30x = 63,165,808,009.06
  5. Step 5: Solve for x
    x = 63,165,808,009.06/328,255.30
  6. Step 6: Final answer
    x = 192,428.91

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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.