Home / 228,583,220.68-315,471,013.01-128,138,786.91

Finding the Fourth Proportional to 228,583,220.68, 315,471,013.01 and 128,138,786.91

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Solution

The fourth proportional to 228,583,220.68, 315,471,013.01 and 128,138,786.91 is: 176,846,195.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,583,220.68 : 315,471,013.01 = 128,138,786.91 : x
  2. Step 2: Convert to fraction form
    228,583,220.68/315,471,013.01 = 128,138,786.91/x
  3. Step 3: Cross multiply
    228,583,220.68x = 315,471,013.01 × 128,138,786.91
  4. Step 4: Simplify right side
    228,583,220.68x = 40,424,072,912,370,224
  5. Step 5: Solve for x
    x = 40,424,072,912,370,224/228,583,220.68
  6. Step 6: Final answer
    x = 176,846,195.41

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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.