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Finding the Fourth Proportional to 201,649.50, 278,276.31 and 112,246.62

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Solution

The fourth proportional to 201,649.50, 278,276.31 and 112,246.62 is: 154,900.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,649.50 : 278,276.31 = 112,246.62 : x
  2. Step 2: Convert to fraction form
    201,649.50/278,276.31 = 112,246.62/x
  3. Step 3: Cross multiply
    201,649.50x = 278,276.31 × 112,246.62
  4. Step 4: Simplify right side
    201,649.50x = 31,235,575,223.57
  5. Step 5: Solve for x
    x = 31,235,575,223.57/201,649.50
  6. Step 6: Final answer
    x = 154,900.34

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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.