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Finding the Fourth Proportional to 304,136.68, 456,270.24 and 90,921.31

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Solution

The fourth proportional to 304,136.68, 456,270.24 and 90,921.31 is: 136,401.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,136.68 : 456,270.24 = 90,921.31 : x
  2. Step 2: Convert to fraction form
    304,136.68/456,270.24 = 90,921.31/x
  3. Step 3: Cross multiply
    304,136.68x = 456,270.24 × 90,921.31
  4. Step 4: Simplify right side
    304,136.68x = 41,484,687,934.81
  5. Step 5: Solve for x
    x = 41,484,687,934.81/304,136.68
  6. Step 6: Final answer
    x = 136,401.46

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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.