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Finding the Fourth Proportional to 287,368.38, 396,580.71 and 160,043.98

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Solution

The fourth proportional to 287,368.38, 396,580.71 and 160,043.98 is: 220,867.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,368.38 : 396,580.71 = 160,043.98 : x
  2. Step 2: Convert to fraction form
    287,368.38/396,580.71 = 160,043.98/x
  3. Step 3: Cross multiply
    287,368.38x = 396,580.71 × 160,043.98
  4. Step 4: Simplify right side
    287,368.38x = 63,470,353,556.30
  5. Step 5: Solve for x
    x = 63,470,353,556.30/287,368.38
  6. Step 6: Final answer
    x = 220,867.56

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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.