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Finding the Fourth Proportional to 423,628.84, 635,441.87 and 153,756.62

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Solution

The fourth proportional to 423,628.84, 635,441.87 and 153,756.62 is: 230,634.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,628.84 : 635,441.87 = 153,756.62 : x
  2. Step 2: Convert to fraction form
    423,628.84/635,441.87 = 153,756.62/x
  3. Step 3: Cross multiply
    423,628.84x = 635,441.87 × 153,756.62
  4. Step 4: Simplify right side
    423,628.84x = 97,703,390,960.47
  5. Step 5: Solve for x
    x = 97,703,390,960.47/423,628.84
  6. Step 6: Final answer
    x = 230,634.42

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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.