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Finding the Fourth Proportional to 228,497.79, 315,330.29 and 131,648.21

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Solution

The fourth proportional to 228,497.79, 315,330.29 and 131,648.21 is: 181,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,497.79 : 315,330.29 = 131,648.21 : x
  2. Step 2: Convert to fraction form
    228,497.79/315,330.29 = 131,648.21/x
  3. Step 3: Cross multiply
    228,497.79x = 315,330.29 × 131,648.21
  4. Step 4: Simplify right side
    228,497.79x = 41,512,668,237.28
  5. Step 5: Solve for x
    x = 41,512,668,237.28/228,497.79
  6. Step 6: Final answer
    x = 181,676.45

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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.