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Finding the Fourth Proportional to 228,675.95, 315,472.29 and 137,981.33

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Solution

The fourth proportional to 228,675.95, 315,472.29 and 137,981.33 is: 190,353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,675.95 : 315,472.29 = 137,981.33 : x
  2. Step 2: Convert to fraction form
    228,675.95/315,472.29 = 137,981.33/x
  3. Step 3: Cross multiply
    228,675.95x = 315,472.29 × 137,981.33
  4. Step 4: Simplify right side
    228,675.95x = 43,529,286,152.35
  5. Step 5: Solve for x
    x = 43,529,286,152.35/228,675.95
  6. Step 6: Final answer
    x = 190,353.58

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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.