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Finding the Fourth Proportional to 228,345.17, 315,116.94 and 126,377.66

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Solution

The fourth proportional to 228,345.17, 315,116.94 and 126,377.66 is: 174,401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,345.17 : 315,116.94 = 126,377.66 : x
  2. Step 2: Convert to fraction form
    228,345.17/315,116.94 = 126,377.66/x
  3. Step 3: Cross multiply
    228,345.17x = 315,116.94 × 126,377.66
  4. Step 4: Simplify right side
    228,345.17x = 39,823,740,871.67
  5. Step 5: Solve for x
    x = 39,823,740,871.67/228,345.17
  6. Step 6: Final answer
    x = 174,401.50

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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.