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Finding the Fourth Proportional to 390,868.02, 586,388.12 and 222,467.63

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Solution

The fourth proportional to 390,868.02, 586,388.12 and 222,467.63 is: 333,750.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,868.02 : 586,388.12 = 222,467.63 : x
  2. Step 2: Convert to fraction form
    390,868.02/586,388.12 = 222,467.63/x
  3. Step 3: Cross multiply
    390,868.02x = 586,388.12 × 222,467.63
  4. Step 4: Simplify right side
    390,868.02x = 130,452,371,272.28
  5. Step 5: Solve for x
    x = 130,452,371,272.28/390,868.02
  6. Step 6: Final answer
    x = 333,750.43

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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.