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Finding the Fourth Proportional to 228,639.00, 315,490.24 and 126,639.15

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Solution

The fourth proportional to 228,639.00, 315,490.24 and 126,639.15 is: 174,744.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,639.00 : 315,490.24 = 126,639.15 : x
  2. Step 2: Convert to fraction form
    228,639.00/315,490.24 = 126,639.15/x
  3. Step 3: Cross multiply
    228,639.00x = 315,490.24 × 126,639.15
  4. Step 4: Simplify right side
    228,639.00x = 39,953,414,802.11
  5. Step 5: Solve for x
    x = 39,953,414,802.11/228,639.00
  6. Step 6: Final answer
    x = 174,744.53

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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.