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Finding the Fourth Proportional to 228,920.79, 315,926.88 and 126,956.01

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Solution

The fourth proportional to 228,920.79, 315,926.88 and 126,956.01 is: 175,208.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,920.79 : 315,926.88 = 126,956.01 : x
  2. Step 2: Convert to fraction form
    228,920.79/315,926.88 = 126,956.01/x
  3. Step 3: Cross multiply
    228,920.79x = 315,926.88 × 126,956.01
  4. Step 4: Simplify right side
    228,920.79x = 40,108,816,136.55
  5. Step 5: Solve for x
    x = 40,108,816,136.55/228,920.79
  6. Step 6: Final answer
    x = 175,208.27

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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.