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Finding the Fourth Proportional to 400,818.71, 553,138.76 and 228,733.25

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Solution

The fourth proportional to 400,818.71, 553,138.76 and 228,733.25 is: 315,656.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,818.71 : 553,138.76 = 228,733.25 : x
  2. Step 2: Convert to fraction form
    400,818.71/553,138.76 = 228,733.25/x
  3. Step 3: Cross multiply
    400,818.71x = 553,138.76 × 228,733.25
  4. Step 4: Simplify right side
    400,818.71x = 126,521,224,081.91
  5. Step 5: Solve for x
    x = 126,521,224,081.91/400,818.71
  6. Step 6: Final answer
    x = 315,656.98

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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.