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Finding the Fourth Proportional to 388,725.89, 583,088.84 and 222,397.25

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Solution

The fourth proportional to 388,725.89, 583,088.84 and 222,397.25 is: 333,595.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,725.89 : 583,088.84 = 222,397.25 : x
  2. Step 2: Convert to fraction form
    388,725.89/583,088.84 = 222,397.25/x
  3. Step 3: Cross multiply
    388,725.89x = 583,088.84 × 222,397.25
  4. Step 4: Simplify right side
    388,725.89x = 129,677,353,409.70
  5. Step 5: Solve for x
    x = 129,677,353,409.70/388,725.89
  6. Step 6: Final answer
    x = 333,595.88

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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.