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Finding the Fourth Proportional to 208,229.40, 287,840.82 and 185,790.78

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Solution

The fourth proportional to 208,229.40, 287,840.82 and 185,790.78 is: 256,823.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,229.40 : 287,840.82 = 185,790.78 : x
  2. Step 2: Convert to fraction form
    208,229.40/287,840.82 = 185,790.78/x
  3. Step 3: Cross multiply
    208,229.40x = 287,840.82 × 185,790.78
  4. Step 4: Simplify right side
    208,229.40x = 53,478,170,463.64
  5. Step 5: Solve for x
    x = 53,478,170,463.64/208,229.40
  6. Step 6: Final answer
    x = 256,823.34

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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.