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Finding the Fourth Proportional to 328,256.28, 492,384.42 and 253,485.72

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Solution

The fourth proportional to 328,256.28, 492,384.42 and 253,485.72 is: 380,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,256.28 : 492,384.42 = 253,485.72 : x
  2. Step 2: Convert to fraction form
    328,256.28/492,384.42 = 253,485.72/x
  3. Step 3: Cross multiply
    328,256.28x = 492,384.42 × 253,485.72
  4. Step 4: Simplify right side
    328,256.28x = 124,812,419,220.48
  5. Step 5: Solve for x
    x = 124,812,419,220.48/328,256.28
  6. Step 6: Final answer
    x = 380,228.58

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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.