Home / 328,145.40-492,218.10-272,158.20

Finding the Fourth Proportional to 328,145.40, 492,218.10 and 272,158.20

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Solution

The fourth proportional to 328,145.40, 492,218.10 and 272,158.20 is: 408,237.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,145.40 : 492,218.10 = 272,158.20 : x
  2. Step 2: Convert to fraction form
    328,145.40/492,218.10 = 272,158.20/x
  3. Step 3: Cross multiply
    328,145.40x = 492,218.10 × 272,158.20
  4. Step 4: Simplify right side
    328,145.40x = 133,961,192,103.42
  5. Step 5: Solve for x
    x = 133,961,192,103.42/328,145.40
  6. Step 6: Final answer
    x = 408,237.30

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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.