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Finding the Fourth Proportional to 400,988.89, 553,343.51 and 228,900.01

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Solution

The fourth proportional to 400,988.89, 553,343.51 and 228,900.01 is: 315,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,988.89 : 553,343.51 = 228,900.01 : x
  2. Step 2: Convert to fraction form
    400,988.89/553,343.51 = 228,900.01/x
  3. Step 3: Cross multiply
    400,988.89x = 553,343.51 × 228,900.01
  4. Step 4: Simplify right side
    400,988.89x = 126,660,334,972.44
  5. Step 5: Solve for x
    x = 126,660,334,972.44/400,988.89
  6. Step 6: Final answer
    x = 315,869.94

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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.