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Finding the Fourth Proportional to 228,794.55, 315,732.64 and 125,428.05

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Solution

The fourth proportional to 228,794.55, 315,732.64 and 125,428.05 is: 173,088.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,794.55 : 315,732.64 = 125,428.05 : x
  2. Step 2: Convert to fraction form
    228,794.55/315,732.64 = 125,428.05/x
  3. Step 3: Cross multiply
    228,794.55x = 315,732.64 × 125,428.05
  4. Step 4: Simplify right side
    228,794.55x = 39,601,729,356.55
  5. Step 5: Solve for x
    x = 39,601,729,356.55/228,794.55
  6. Step 6: Final answer
    x = 173,088.60

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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.