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Finding the Fourth Proportional to 286,003.72, 394,684.03 and 156,944.35

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Solution

The fourth proportional to 286,003.72, 394,684.03 and 156,944.35 is: 216,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,003.72 : 394,684.03 = 156,944.35 : x
  2. Step 2: Convert to fraction form
    286,003.72/394,684.03 = 156,944.35/x
  3. Step 3: Cross multiply
    286,003.72x = 394,684.03 × 156,944.35
  4. Step 4: Simplify right side
    286,003.72x = 61,943,428,543.73
  5. Step 5: Solve for x
    x = 61,943,428,543.73/286,003.72
  6. Step 6: Final answer
    x = 216,582.60

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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.