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Finding the Fourth Proportional to 286,356.72, 395,124.85 and 165,509.28

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Solution

The fourth proportional to 286,356.72, 395,124.85 and 165,509.28 is: 228,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,356.72 : 395,124.85 = 165,509.28 : x
  2. Step 2: Convert to fraction form
    286,356.72/395,124.85 = 165,509.28/x
  3. Step 3: Cross multiply
    286,356.72x = 395,124.85 × 165,509.28
  4. Step 4: Simplify right side
    286,356.72x = 65,396,829,433.61
  5. Step 5: Solve for x
    x = 65,396,829,433.61/286,356.72
  6. Step 6: Final answer
    x = 228,375.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.