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Finding the Fourth Proportional to 290,247.68, 435,289.08 and 112,716.80

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Solution

The fourth proportional to 290,247.68, 435,289.08 and 112,716.80 is: 169,043.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,247.68 : 435,289.08 = 112,716.80 : x
  2. Step 2: Convert to fraction form
    290,247.68/435,289.08 = 112,716.80/x
  3. Step 3: Cross multiply
    290,247.68x = 435,289.08 × 112,716.80
  4. Step 4: Simplify right side
    290,247.68x = 49,064,392,172.54
  5. Step 5: Solve for x
    x = 49,064,392,172.54/290,247.68
  6. Step 6: Final answer
    x = 169,043.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.