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Finding the Fourth Proportional to 400,886.80, 553,232.72 and 228,801.32

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Solution

The fourth proportional to 400,886.80, 553,232.72 and 228,801.32 is: 315,750.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,886.80 : 553,232.72 = 228,801.32 : x
  2. Step 2: Convert to fraction form
    400,886.80/553,232.72 = 228,801.32/x
  3. Step 3: Cross multiply
    400,886.80x = 553,232.72 × 228,801.32
  4. Step 4: Simplify right side
    400,886.80x = 126,580,376,603.19
  5. Step 5: Solve for x
    x = 126,580,376,603.19/400,886.80
  6. Step 6: Final answer
    x = 315,750.92

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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.