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Finding the Fourth Proportional to 287,649.14, 431,668.07 and 100,662.26

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Solution

The fourth proportional to 287,649.14, 431,668.07 and 100,662.26 is: 151,061.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,649.14 : 431,668.07 = 100,662.26 : x
  2. Step 2: Convert to fraction form
    287,649.14/431,668.07 = 100,662.26/x
  3. Step 3: Cross multiply
    287,649.14x = 431,668.07 × 100,662.26
  4. Step 4: Simplify right side
    287,649.14x = 43,452,683,496.04
  5. Step 5: Solve for x
    x = 43,452,683,496.04/287,649.14
  6. Step 6: Final answer
    x = 151,061.41

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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.