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Finding the Fourth Proportional to 157,509.40, 236,264.10 and 143,731.30

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Solution

The fourth proportional to 157,509.40, 236,264.10 and 143,731.30 is: 215,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,509.40 : 236,264.10 = 143,731.30 : x
  2. Step 2: Convert to fraction form
    157,509.40/236,264.10 = 143,731.30/x
  3. Step 3: Cross multiply
    157,509.40x = 236,264.10 × 143,731.30
  4. Step 4: Simplify right side
    157,509.40x = 33,958,546,236.33
  5. Step 5: Solve for x
    x = 33,958,546,236.33/157,509.40
  6. Step 6: Final answer
    x = 215,596.95

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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.