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Finding the Fourth Proportional to 157,514.40, 236,271.60 and 143,736.30

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Solution

The fourth proportional to 157,514.40, 236,271.60 and 143,736.30 is: 215,604.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,514.40 : 236,271.60 = 143,736.30 : x
  2. Step 2: Convert to fraction form
    157,514.40/236,271.60 = 143,736.30/x
  3. Step 3: Cross multiply
    157,514.40x = 236,271.60 × 143,736.30
  4. Step 4: Simplify right side
    157,514.40x = 33,960,805,579.08
  5. Step 5: Solve for x
    x = 33,960,805,579.08/157,514.40
  6. Step 6: Final answer
    x = 215,604.45

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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.