Home / 228,583,217.81-315,471,009.03-128,138,784.03

Finding the Fourth Proportional to 228,583,217.81, 315,471,009.03 and 128,138,784.03

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Solution

The fourth proportional to 228,583,217.81, 315,471,009.03 and 128,138,784.03 is: 176,846,191.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,583,217.81 : 315,471,009.03 = 128,138,784.03 : x
  2. Step 2: Convert to fraction form
    228,583,217.81/315,471,009.03 = 128,138,784.03/x
  3. Step 3: Cross multiply
    228,583,217.81x = 315,471,009.03 × 128,138,784.03
  4. Step 4: Simplify right side
    228,583,217.81x = 40,424,071,493,821,344
  5. Step 5: Solve for x
    x = 40,424,071,493,821,344/228,583,217.81
  6. Step 6: Final answer
    x = 176,846,191.43

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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.