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Finding the Fourth Proportional to 228,510.91, 315,340.05 and 133,015.56

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Solution

The fourth proportional to 228,510.91, 315,340.05 and 133,015.56 is: 183,558.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,510.91 : 315,340.05 = 133,015.56 : x
  2. Step 2: Convert to fraction form
    228,510.91/315,340.05 = 133,015.56/x
  3. Step 3: Cross multiply
    228,510.91x = 315,340.05 × 133,015.56
  4. Step 4: Simplify right side
    228,510.91x = 41,945,133,341.18
  5. Step 5: Solve for x
    x = 41,945,133,341.18/228,510.91
  6. Step 6: Final answer
    x = 183,558.56

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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.