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Finding the Fourth Proportional to 390,882.02, 586,409.12 and 222,481.63

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Solution

The fourth proportional to 390,882.02, 586,409.12 and 222,481.63 is: 333,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,882.02 : 586,409.12 = 222,481.63 : x
  2. Step 2: Convert to fraction form
    390,882.02/586,409.12 = 222,481.63/x
  3. Step 3: Cross multiply
    390,882.02x = 586,409.12 × 222,481.63
  4. Step 4: Simplify right side
    390,882.02x = 130,465,256,864.47
  5. Step 5: Solve for x
    x = 130,465,256,864.47/390,882.02
  6. Step 6: Final answer
    x = 333,771.45

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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.