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Finding the Fourth Proportional to 315,497.84, 435,425.20 and 179,564.84

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Solution

The fourth proportional to 315,497.84, 435,425.20 and 179,564.84 is: 247,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,497.84 : 435,425.20 = 179,564.84 : x
  2. Step 2: Convert to fraction form
    315,497.84/435,425.20 = 179,564.84/x
  3. Step 3: Cross multiply
    315,497.84x = 435,425.20 × 179,564.84
  4. Step 4: Simplify right side
    315,497.84x = 78,187,056,369.97
  5. Step 5: Solve for x
    x = 78,187,056,369.97/315,497.84
  6. Step 6: Final answer
    x = 247,821.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.