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Finding the Fourth Proportional to 228,505.92, 315,240.44 and 137,810.32

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Solution

The fourth proportional to 228,505.92, 315,240.44 and 137,810.32 is: 190,119.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,505.92 : 315,240.44 = 137,810.32 : x
  2. Step 2: Convert to fraction form
    228,505.92/315,240.44 = 137,810.32/x
  3. Step 3: Cross multiply
    228,505.92x = 315,240.44 × 137,810.32
  4. Step 4: Simplify right side
    228,505.92x = 43,443,385,913.34
  5. Step 5: Solve for x
    x = 43,443,385,913.34/228,505.92
  6. Step 6: Final answer
    x = 190,119.30

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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.