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Finding the Fourth Proportional to 388,726.64, 583,089.96 and 222,398

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Solution

The fourth proportional to 388,726.64, 583,089.96 and 222,398 is: 333,597.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,726.64 : 583,089.96 = 222,398 : x
  2. Step 2: Convert to fraction form
    388,726.64/583,089.96 = 222,398/x
  3. Step 3: Cross multiply
    388,726.64x = 583,089.96 × 222,398
  4. Step 4: Simplify right side
    388,726.64x = 129,678,040,924.08
  5. Step 5: Solve for x
    x = 129,678,040,924.08/388,726.64
  6. Step 6: Final answer
    x = 333,597.00

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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.