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Finding the Fourth Proportional to 280,483.41, 387,016.11 and 165,781.33

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Solution

The fourth proportional to 280,483.41, 387,016.11 and 165,781.33 is: 228,748.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,483.41 : 387,016.11 = 165,781.33 : x
  2. Step 2: Convert to fraction form
    280,483.41/387,016.11 = 165,781.33/x
  3. Step 3: Cross multiply
    280,483.41x = 387,016.11 × 165,781.33
  4. Step 4: Simplify right side
    280,483.41x = 64,160,045,447.23
  5. Step 5: Solve for x
    x = 64,160,045,447.23/280,483.41
  6. Step 6: Final answer
    x = 228,748.09

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1.5x scale

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.