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Finding the Fourth Proportional to 458,093.32, 687,139.99 and 142,550.24

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Solution

The fourth proportional to 458,093.32, 687,139.99 and 142,550.24 is: 213,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,093.32 : 687,139.99 = 142,550.24 : x
  2. Step 2: Convert to fraction form
    458,093.32/687,139.99 = 142,550.24/x
  3. Step 3: Cross multiply
    458,093.32x = 687,139.99 × 142,550.24
  4. Step 4: Simplify right side
    458,093.32x = 97,951,966,696.02
  5. Step 5: Solve for x
    x = 97,951,966,696.02/458,093.32
  6. Step 6: Final answer
    x = 213,825.36

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Similar ratio
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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.