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Finding the Fourth Proportional to 228,411.88, 315,212.58 and 127,809.64

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Solution

The fourth proportional to 228,411.88, 315,212.58 and 127,809.64 is: 176,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,411.88 : 315,212.58 = 127,809.64 : x
  2. Step 2: Convert to fraction form
    228,411.88/315,212.58 = 127,809.64/x
  3. Step 3: Cross multiply
    228,411.88x = 315,212.58 × 127,809.64
  4. Step 4: Simplify right side
    228,411.88x = 40,287,206,373.27
  5. Step 5: Solve for x
    x = 40,287,206,373.27/228,411.88
  6. Step 6: Final answer
    x = 176,379.65

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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.