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Finding the Fourth Proportional to 228,881.81, 315,860.70 and 126,911.58

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Solution

The fourth proportional to 228,881.81, 315,860.70 and 126,911.58 is: 175,140.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,881.81 : 315,860.70 = 126,911.58 : x
  2. Step 2: Convert to fraction form
    228,881.81/315,860.70 = 126,911.58/x
  3. Step 3: Cross multiply
    228,881.81x = 315,860.70 × 126,911.58
  4. Step 4: Simplify right side
    228,881.81x = 40,086,379,788.35
  5. Step 5: Solve for x
    x = 40,086,379,788.35/228,881.81
  6. Step 6: Final answer
    x = 175,140.08

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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.