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Finding the Fourth Proportional to 390,868.52, 586,388.88 and 222,468.14

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Solution

The fourth proportional to 390,868.52, 586,388.88 and 222,468.14 is: 333,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,868.52 : 586,388.88 = 222,468.14 : x
  2. Step 2: Convert to fraction form
    390,868.52/586,388.88 = 222,468.14/x
  3. Step 3: Cross multiply
    390,868.52x = 586,388.88 × 222,468.14
  4. Step 4: Simplify right side
    390,868.52x = 130,452,843,450.28
  5. Step 5: Solve for x
    x = 130,452,843,450.28/390,868.52
  6. Step 6: Final answer
    x = 333,751.21

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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.