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Finding the Fourth Proportional to 390,863.52, 586,381.37 and 222,463.13

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Solution

The fourth proportional to 390,863.52, 586,381.37 and 222,463.13 is: 333,743.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,863.52 : 586,381.37 = 222,463.13 : x
  2. Step 2: Convert to fraction form
    390,863.52/586,381.37 = 222,463.13/x
  3. Step 3: Cross multiply
    390,863.52x = 586,381.37 × 222,463.13
  4. Step 4: Simplify right side
    390,863.52x = 130,448,230,899.67
  5. Step 5: Solve for x
    x = 130,448,230,899.67/390,863.52
  6. Step 6: Final answer
    x = 333,743.68

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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.