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Finding the Fourth Proportional to 228,738.78, 315,666.54 and 126,754.77

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Solution

The fourth proportional to 228,738.78, 315,666.54 and 126,754.77 is: 174,925.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,738.78 : 315,666.54 = 126,754.77 : x
  2. Step 2: Convert to fraction form
    228,738.78/315,666.54 = 126,754.77/x
  3. Step 3: Cross multiply
    228,738.78x = 315,666.54 × 126,754.77
  4. Step 4: Simplify right side
    228,738.78x = 40,012,239,674.40
  5. Step 5: Solve for x
    x = 40,012,239,674.40/228,738.78
  6. Step 6: Final answer
    x = 174,925.47

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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.