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Finding the Fourth Proportional to 208,370.40, 287,550.45 and 112,876.98

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Solution

The fourth proportional to 208,370.40, 287,550.45 and 112,876.98 is: 155,769.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,370.40 : 287,550.45 = 112,876.98 : x
  2. Step 2: Convert to fraction form
    208,370.40/287,550.45 = 112,876.98/x
  3. Step 3: Cross multiply
    208,370.40x = 287,550.45 × 112,876.98
  4. Step 4: Simplify right side
    208,370.40x = 32,457,826,393.64
  5. Step 5: Solve for x
    x = 32,457,826,393.64/208,370.40
  6. Step 6: Final answer
    x = 155,769.85

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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.