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Finding the Fourth Proportional to 400,691.84, 552,969.64 and 228,637.84

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Solution

The fourth proportional to 400,691.84, 552,969.64 and 228,637.84 is: 315,528.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,691.84 : 552,969.64 = 228,637.84 : x
  2. Step 2: Convert to fraction form
    400,691.84/552,969.64 = 228,637.84/x
  3. Step 3: Cross multiply
    400,691.84x = 552,969.64 × 228,637.84
  4. Step 4: Simplify right side
    400,691.84x = 126,429,784,075.18
  5. Step 5: Solve for x
    x = 126,429,784,075.18/400,691.84
  6. Step 6: Final answer
    x = 315,528.72

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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.