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Finding the Fourth Proportional to 228,673.12, 315,580.16 and 138,027.64

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Solution

The fourth proportional to 228,673.12, 315,580.16 and 138,027.64 is: 190,484.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,673.12 : 315,580.16 = 138,027.64 : x
  2. Step 2: Convert to fraction form
    228,673.12/315,580.16 = 138,027.64/x
  3. Step 3: Cross multiply
    228,673.12x = 315,580.16 × 138,027.64
  4. Step 4: Simplify right side
    228,673.12x = 43,558,784,715.62
  5. Step 5: Solve for x
    x = 43,558,784,715.62/228,673.12
  6. Step 6: Final answer
    x = 190,484.94

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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.