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Finding the Fourth Proportional to 228,632.03, 315,666.18 and 142,721.81

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Solution

The fourth proportional to 228,632.03, 315,666.18 and 142,721.81 is: 197,052.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,632.03 : 315,666.18 = 142,721.81 : x
  2. Step 2: Convert to fraction form
    228,632.03/315,666.18 = 142,721.81/x
  3. Step 3: Cross multiply
    228,632.03x = 315,666.18 × 142,721.81
  4. Step 4: Simplify right side
    228,632.03x = 45,052,448,565.39
  5. Step 5: Solve for x
    x = 45,052,448,565.39/228,632.03
  6. Step 6: Final answer
    x = 197,052.22

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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.